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compass

compass

compass Sentence Examples

  • Use your compass instead of the radar.

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  • Use your compass instead of the radar.

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  • I think the compass tells you what kind of soul it is.

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  • The compass needle is a little steel magnet balanced upon a pivot; one end of the needle, which always bears a distinguishing mark, points approximately, but not in general exactly, to the north,' the vertical plane through the direction of the needle being termed the magnetic meridian.

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  • Gabriel thought back to the three items he'd discovered in her jewelry box: the compass, a soul and the tarnished ring he gave her hundreds of years ago.

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  • He took the soul compass only.

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  • "Thanks," he said and tucked the compass away.

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  • He unpacked his compass and figured out the direction he should walk in order to stay near the river.

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  • This compass is only a few thousand years old.

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  • This can be more easily shown if the compass is replaced by a magnetized knitting needle, supported horizontally by a thread.

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  • This can be more easily shown if the compass is replaced by a magnetized knitting needle, supported horizontally by a thread.

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  • On the better farms this is done with a spirit-level or compass from time to time and hillside ditches put in at the proper places.

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  • A further difficulty arose in connexion with the variation of the compass, which induced Pedro Reinel Behaim'S Globe 1492 Fig.

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  • If Ritschl had clearly shown that judgments of value enfold and transform other types of knowledge, just as the "spiritual man" includes and transfigures but does not annihilate the "natural man," then within the compass of this spiritually conditioned knowledge all other knowledge would be seen to have a function and a home.

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  • Other accessories are an hour-circle, around the north pole, a compass placed beneath the globe, and a flexible quadrant used for finding the distances between places.

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  • Whether this justifies Wagner's successors and imitators in showing a constant preference for passages of which not even the general outline is practicable; whether it justifies a state of things in which the normal compass of every instrument in an advanced loth-century score would appear to be about a fifth higher than any player of that instrument will admit;, whether it proves that it is artistically desirable that when there.

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  • Whether this justifies Wagner's successors and imitators in showing a constant preference for passages of which not even the general outline is practicable; whether it justifies a state of things in which the normal compass of every instrument in an advanced loth-century score would appear to be about a fifth higher than any player of that instrument will admit;, whether it proves that it is artistically desirable that when there.

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  • High above all the medley of kindreds and tongues, untrammelled by national traditions, for he had outgrown the compass of any one nation, invested with the glory of achievements in which the old bounds of the possible seemed to fall away, stood in 324 the man Alexander.

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  • The apex in this case will describe a circle, or rather a spiral, as it is elongating all the time, pointing to all points of the compass in succession.

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  • dependent upon the seaman's observation of the heavens, for these charts were in use long before the compass had been introduced on board ship (as early as 1205, according to Guiot de Provins) although it became fully serviceable only after the needle had been attached to the compass card, an improvement probably introduced by Flavio Gioja of Amalfi in the beginning of A.

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  • dependent upon the seaman's observation of the heavens, for these charts were in use long before the compass had been introduced on board ship (as early as 1205, according to Guiot de Provins) although it became fully serviceable only after the needle had been attached to the compass card, an improvement probably introduced by Flavio Gioja of Amalfi in the beginning of A.

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  • A great gun was fired to different points of the compass and all the country within its range, including the town of Cuddalore, passed into the possession of the English.

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  • A great gun was fired to different points of the compass and all the country within its range, including the town of Cuddalore, passed into the possession of the English.

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  • The Venetians - already, perhaps, indoctrinated in the Hohenstaufen plan - indicated to the leaders a way of meeting the difficulty: they had only to lend their services to the republic for certain ends which it desired to compass, and the debt was settled.

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  • The Venetians - already, perhaps, indoctrinated in the Hohenstaufen plan - indicated to the leaders a way of meeting the difficulty: they had only to lend their services to the republic for certain ends which it desired to compass, and the debt was settled.

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  • Delisle in 19 sheets (1739-1745); charts illustrating the variation of the compass and of magnetic " dip " by E.

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  • Upon one of these is based the principle of the mariner's compass, which is said to have been known to the Chinese as early as I ioo B.C., though it was not introduced into Europe until more than 2000 years later; a magnet supported so that its axis is free to turn in a horizontal plane will come to rest with its poles pointing approximately north and south.

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  • The compass grew hot against his chest.

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  • Not hesitating to hand over the compass, she appeared torn at taking the final step of betrayal.

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  • Not hesitating to hand over the compass, she appeared torn at taking the final step of betrayal.

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  • His experimental investigations are carried out with plain and usually home-made apparatus, the accessories being crude and rough, but the essentials thoughtfully designed so as to compass in the simplest and most perfect manner the special end in view.

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  • With a soul compass in one hand and his dinner in the other, Darkyn was satisfied for the first time in months.

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  • With a soul compass in one hand and his dinner in the other, Darkyn was satisfied for the first time in months.

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  • I was like that ship before my education began, only I was without compass or sounding-line, and had no way of knowing how near the harbour was.

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  • When the compass is far from the magnet, the vibrations will be comparatively slow; when it is near a pole, they will be exceedingly rapid, the frequency of the vibrations varying as the square root of the magnetic force at the spot.

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  • He lifted a small soul-tracking device off the table, a round compass whose edges were lined with symbols from a dead language too old for him to read.

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  • Lay the compass upon the cardboard, and observe the rate at which its needle vibrates after being displaced from its position of equilibrium; this will vary greatly in different regions.

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  • Amongst the most important of his works not already mentioned may be named the following: - Mathematical Tracts (1826) on the Lunar Theory, Figure of the Earth, Precession and Nutation, and Calculus of Variations, to which, in the second edition of 1828, were added tracts on the Planetary Theory and the Undulatory Theory of Light; Experiments on Iron-built Ships, instituted for the purpose of discovering a correction for the deviation of the Compass produced by the Iron of the Ships (1839); On the Theoretical Explanation of an apparent new Polarity in Light (1840); Tides and Waves (1842).

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  • A south pole would be urged oppositely to the conventional " direction " of the line; hence it follows that a very small magnetic needle, if placed in the field, would tend to set itself along or tangentially to the line of force passing through its centre, as may be approximately verified if the compass be placed among the filings on the cardboard.

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  • Wariness crossed Tamer's face as he realized what the compass did.

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  • As soon as another compass is ready, send a dealer out with it.

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  • He hated the idea but understood the necessity, especially after finding the second compass in the hands of demons within a week.

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  • He hated the idea but understood the necessity, especially after finding the second compass in the hands of demons within a week.

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  • It is feeblest in architecture and strongest in the branches demanding skill and care in a limited compass, such as painting, porcelain and enamel.

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  • It is feeblest in architecture and strongest in the branches demanding skill and care in a limited compass, such as painting, porcelain and enamel.

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  • Some of the principal phenomena of magnetism may be demonstrated with very little apparatus; much may be done with a small bar-magnet, a pocket compass and a few ounces of iron filings.

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  • on the compass card, and so surmounted it with the fleur-de-lys, traditionally chosen for that purpose on the compass by Flavio Gioja in honour of Charles of Anjou, king of Sicily and Naples.

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  • The city is built with its streets running between the cardinal points of the compass and crossing each other at right angles.

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  • Their mutinies were frequent and dangerous, and at last, in 1682, an unusually serious outbreak led Peter the Great to compass the abolition of the force.

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  • Their mutinies were frequent and dangerous, and at last, in 1682, an unusually serious outbreak led Peter the Great to compass the abolition of the force.

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  • Sarah related whole story, ending with, "Never thought I'd see the day that man would have a moral compass, let alone be one."

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  • "If it makes you feel better, I've got another traitor," Gabriel said in cold anger, motioning to the soul compass the demon's had obtained.

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  • As I was desirous to recover the long lost bottom of Walden Pond, I surveyed it carefully, before the ice broke up, early in '46, with compass and chain and sounding line.

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  • The first maps illustrating the variation of the compass were published by Chris.

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  • It is however easy to demonstrate by means of the compass that the force is much greater in some parts of the field than in others.

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  • to his own, the royalists began to compass the death of the man whom they had at first naively looked on as a potential General Monk to their Charles II.

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  • If one pole of the bar-magnet is brought near the compass, it will attract the opposite pole of the compass-needle; and the magnetic action will not be sensibly affected by the interposition between the bar and the compass of any substance whatever except iron or other magnetizable metal.

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  • No matter where the compass pointed, it led him to the correct body.

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  • in diameter; the eight sides, which face the points of the compass, are furnished with a frieze containing inartistic figures in relief representing the winds; below it, on the sides facing the sun, are the lines of a sun-dial.

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  • The poles of a piece of magnetized steel may be at once distinguished if the two ends are successively presented to the compass; that end which attracts the south pole of the compass needle (and is therefore north) may be marked for easy identification.

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  • The poles of a piece of magnetized steel may be at once distinguished if the two ends are successively presented to the compass; that end which attracts the south pole of the compass needle (and is therefore north) may be marked for easy identification.

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  • He stepped back from the desk, as if fearing the compass would claim his soul right there.

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  • The compass may of course have been used for improving these charts, but they originated without its aid, and it is therefore misleading to describe them as Compass or Loxodromic charts, and they are now known as Portolano charts.

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  • He stepped back from the desk, as if fearing the compass would claim his soul right there.

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  • The compass may of course have been used for improving these charts, but they originated without its aid, and it is therefore misleading to describe them as Compass or Loxodromic charts, and they are now known as Portolano charts.

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  • The only difference to be reckoned with may be in recent tendencies of solo vocalists to sing for effect, and so to extend the compass of the voice upwards.

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  • He lifted the compass first.

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  • He plucked the compass from his chest and waited to see what it did.

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  • He pulled off the compass and held it out.

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  • Having dwelt in that egg for a year, that lord spontaneously by his own thought split that egg in two; and from the two halves he fashioned the heaven and the earth, and in the middle,the sky,and the eight regions (the points of the compass), and the perpetual place of the waters.

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  • Guessing the compass only worked in the mortal world, Gabe emplaced it around his neck before picking up the green emerald – the form a soul took after death – and peering at it.

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  • In the meantime, he'd learn to use the compass better and decipher the symbols.

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  • "Soul compass," he said, not expecting the tool.

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  • It contained three items: a tarnished ring, a soul and a delicate silver necklace with a compass on the end.

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  • It contained three items: a tarnished ring, a soul and a delicate silver necklace with a compass on the end.

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  • They got another compass.

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  • He studied the compass.

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  • Clearly you found the compass.

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  • Muscular and dark-skinned, Tamer was hunched over the table in the center of the room, putting the final magic touches on a new compass.

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  • "Alright. Here's another," Tamer said and held out the compass.

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  • The writing on the tablet was too faded to make out, and the symbols he did see looked nothing like those on the compass.

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  • "The writing on this is from the time-before-time," Tamer said, motioning to the compass.

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  • How old is the compass?

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  • She held out something that looked like a compass.

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  • Gabe asked, holding up the compass.

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  • I figured out a few of the symbols on your compass.

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  • Darkyn was old enough to read the compass.

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  • In 1727 he gained the prize given by the Academie des Sciences for his paper "On the best manner of forming and distributing the masts of ships"; and two other prizes, one for his dissertation "On the best method of observing the altitude of stars at sea," the other for his paper "On the best method of observing the variation of the compass at sea."

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  • This great event was preceded by the general Portu- utilization in Europe of the polarity of the magnetic guese ex- needle in the construction of the mariner's compass.

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  • Its presence contributes to the dark colour of many basalts and other basic rocks, and may cause them to disturb the compass.

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  • The cotton is pressed locally and afterwards " compressed " into a very small compass.

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  • It was a mile in diameter, built in concentric circles, with the mosque and palace of the caliph in the centre, and had four gates toward the four points of the compass.

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  • A compass having a very short needle is placed on the line which bisects the axis of the magnet at right angles, and is moved until a neutral point is found where the force due to the earth's field H is balanced by that due to the magnet.

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  • of a crowd of small compass needles (representative of magnetic molecules) is proportional to the 1.6th power of the aggregate maximum magnetic moment before or after completion of the cycle.

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  • above them (thus A compass needle placed in the gap serves to detect any flow of induction that may exist between the bent bars.

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  • Suppose the switches to be adjusted so that the effective number of turns in the variable coil is loo; the magnetizing forces in the two coils will then be equal, and if the test rod is of the same quality as the standard, the flow of induction will be confined entirely to the iron circuit, the two yokes will be at the same magnetic potential, and the compass needle will not be affected.

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  • If, however, the permeability of the test rod differs from that of the standard, the number of lines of induction flowing in opposite directions through the two rods will differ, and the excess will flow from one yoke to the other, partly through the air, and partly along the path provided by the bent bars, deflecting the compass needle.

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  • But a balance may still be obtained by altering the effective number of turns in the test coil, and thus increasing or decreasing the magnetizing force acting on the test rod, till the induction in the two rods is the same, a condition which is fulfilled when reversal of the current has no effect on the compass needle.

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  • The effect of these is beautifully illustrated by a model consisting of a number of little compass needles pivoted on sharp points and grouped near to one another upon a board, which is placed inside a large magnetizing coil.

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  • The application of this property to the construction of the mariner's compass is obvious, and it is in connexion with navigation that the first references to it occur '(see' Compass).

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  • If the stichometry of Nicephorus is right, the existing form of the book is merely fragmentary compared with its original compass.

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  • On the breaking out of the Rye House Plot, of which neither he, Essex, nor Sidney had the slightest knowledge, he was accused by informers of promising his assistance to raise an insurrection and compass the death of the king.

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  • In February 1789, guided by compass, he traversed the country, practically unknown to white men, from Frederickstown to Quebec, falling in with Indians by the way, with whom he fraternized; and in a subsequent expedition he was formally adopted at Detroit by the Bear tribe of Hurons as one of their chiefs, and made his way down the Mississippi to New Orleans, whence he returned to England.

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  • i, Marking compass.

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  • The investigations on magnetism led to the important practical discovery of a means of rectifying or compensating compass errors in ships.

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  • Numerous lateral ramifying branches spread out from the main trunk in a horizontal direction, tier upon tier, covering a compass of ground the diameter of which is often greater than the height of the tree.

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  • Through affection she purifies the activity of the test of every institution, impulse, act; his fabric and knowledge at every point, is evidently beyond the compass of such an article as this.

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  • The speech is unfortunately lost, but Gibbon, who heard it, told his friend Holroyd (afterwards Earl of Sheffield) that Fox, "taking the vast compass of the question before us, discovered powers for regular debate which neither his friends hoped nor his enemies dreaded."

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  • amplus, large), in astronomy, the angular distance of the rising or setting sun, or other heavenly body, from the east or west point of the horizon; used mostly by navigators in finding the variation of the compass by the setting sun.

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  • The national love of works of large compass shows itself in the production of long epic poems, both of the historic and of the imitative Alexandrian type.

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  • Few writings of this compass afford more copious evidence of date in their literary affinities.

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  • Another of his works, Recensio canonica effectionum geometricarum, bears a stamp not less modern, being what we now call an algebraic geometry - in other words, a collection of precepts how to construct algebraic expressions with the use of rule and compass only.

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  • Vieta, however, did not accept it, as there existed a solution by means of the rule and the compass only, which he published himself in his Apollonius Gallus (1600).

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  • The town, which is situated at the foot of the wooded heights of Edugh, is surrounded with a modern rampart erected outside the old Arab wall, the compass of which was found too small for its growth.

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  • The city is laid out with almost unbroken regularity and is compactly built - the streets running nearly with the cardinal points of the compass.

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  • Heat and cold, rain and drought, the winds in relation to the points of the compass, were nearest their wants and supplies, and were never out of their thoughts.

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  • It was used for taking the altitudes of sun, moon and stars; for calculating latitude; for determining the points of the compass, and time; for ascertaining heights of mountains, &c.; and for construction of horoscopes.

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  • Gioja's latest work Filosofia della statistica (2 vols., 1826; p vols., 1829-1830) contains in brief compass the essence of his ideas on human life, and affords the clearest insight into his aim and method in philosophy both theoretical and practical.

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  • Round the base is a flagged pathway surrounded by a stone railing and entered at the four points of the compass by gateways some 18 ft.

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  • He was not, however, destined to compass the downfall of the Sullan regime; the crisis of the Slave War placed the Senate at the mercy of Pompey and Crassus, who in 70 B.C. swept away the safeguards of senatorial ascendancy, restored the initiative in legislation to the tribunes, and replaced the Equestrian order, i.e.

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  • In the Nibelungenlied, however, the primitive supremacy of the blood-tie has given place to the more modern idea of the supremacy of the passion of love, and Kriemhild marries Attila (Etzel) in order to compass the death of her brothers, in revenge for the murder of Siegfried.

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  • But the very futility of the accusations must have betrayed to More the bitter determination of his enemies to compass his destruction.

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  • A carefully made ship's compass is usually employed, though in some cases the compass card, with its attached magnets, is made reversible, so that the inclination to the zero of the card of the magnetic axis of the system of magnets attached to the card can be eliminated by reversal.

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  • An attachment to the ordinary ship's compass, by means of which satisfactory measurements of the horizontal component have been made on board ship, is described by L.

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  • The principle of the method consists in deflecting the compass needle by means of a horizontal magnet supported vertically over the compass card, the axis of the deflecting magnet being always perpendicular to the axis of the magnet attached to the card.

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  • COMPASS (Fr.

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  • It is also more particularly applied to a mathematical instrument ("pair of compasses") for measuring or for describing a circle, and to the mariner's compass.

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  • The mariner's compass, with which this article is concerned, is an instrument by means of which the directive force of that great magnet, the Earth, upon a freely-suspended needle, is utilized for a purpose essential to navigation.

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  • - Compass Card.

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  • meridian, called the magnetic variation or declination; amongst mariners this angle is known as the variation of the compass.

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  • Following the first chart of lines of equal variation compiled by Edmund Halley in 1700, charts of similar type have been published from time to time embodying recent observations and corrected for the secular change, thus providing seamen with values of the variation accurate to about 30' of arc. Possessing these data, it is easy to ascertain by observation the effects of the iron in a ship in disturbing the compass, and it will be found for the most part in every vessel that the needle is deflected from the magnetic meridian by a horizontal angle called the deviation of the compass; in some directions of the ship's head adding to the known variation of the place, in other directions subtracting from it.

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  • The approaches to Cossack, North Australia; Cape St Francis, Labrador; the coasts of Madagascar and Iceland, are remarkable for such disturbance of the compass.

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  • The compass as we know it is the result of the necessities of navigation, which have increased from century to century.

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  • - Admiralty Compass FIG.

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  • Compass (Frame and Needles).

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  • - Section of Thomson's Compass Bowl.

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  • The section of a compass bowl in fig.

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  • 4 shows the general arrangement of mounting all compass cards in the bowl.

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  • 5 another form of compass called a liquid or spirit compass is shown partly in section.

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  • Great steadiness of card under severe shocks and vibrations, combined with a minimum of friction in the cap and pivot, is obtained with this compass.

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  • - Liquid Compass.

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  • that when the compass is placed in the binnacle the line joining the pivot and the lubber's point be parallel to the keel of the vessel.

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  • in which the ship is steering and the north point of the compass or course is at once seen; and if the magnetic variation and the disturbing effects of the ship's iron are known, the desired angle between the ships's course and the geographical meridian can be computed.

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  • In every ship a position is selected for the navigating or standard compass as free from neighbouring iron as possible, and by this compass all courses are shaped and bearings taken.

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  • It is also provided with an azimuth circle or mirror and a shadow pin or style placed in the centre of the glass cover, by either of which the variable angle between the compass north and true north, called the "total error," or variation and deviation combined, can be observed.

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  • They are also fitted with different forms of suspension in which the compass is mounted to obviate the mechanical disturbance of the card caused by the vibration of the hull in ships driven by powerful engines.

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  • The effects of the iron and steel used in the construction of ships upon the compass occupied the attention of the ablest physicists of the i 9th century, with results which enable navigators to conduct their ships with perfect safety.

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  • The disturbance of the compass by the magnetism of the hull is generally modified, sometimes favourably, more often un favourably, by the magnetized fittings of the ship, such as masts, conning towers, deck houses, engines and boilers.

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  • Thus in every ship the compass needle is more or less subject to deviation differing in amount and direction for every azimuth of the ship's head.

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  • "Investigator" in 1800-1803, and in 1810 led that officer to introduce the practice of placing the ship's head on each point of the compass, and noting the amount of deviation whether to the east or west of the magnetic north, a process which is in full exercise at the present day, and is called "swinging ship."

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  • If an iron ship be swung when upright for deviation, and the mean horizontal and vertical magnetic forces at the compass positions be also observed in different parts of the world, mathematical analysis shows that the deviations are caused partly by the permanent magnetism of hard iron, partly by the transient induced magnetism of soft iron both horizontal and vertical, and in a lesser degree by iron which is neither magnetically hard nor soft, but which becomes magnetized in the same manner as hard iron, though it gradually loses its magnetism on change of conditions, as, for example, in the case of a ship, repaired and hammered in dock, steaming in an opposite direction at sea.

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  • Instead of observing the deviation solely for the purposes of correcting the indications of the compass when disturbed by the iron of the ship, the practice is to subject all deviations to mathematical analysis with a view to their mechanical correction.

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  • B has reference to horizontal forces acting in a longitudinal direction in the ship, and caused partly by the permanent magnetism of hard iron, partly by vertical induction in vertical soft iron either before or abaft the compass.

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  • D is due to transient induction in horizontal soft iron, the direction of which passes continuously under or over the compass.

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  • E is due to transient induction in horizontal soft iron unsymmetrically placed with regard to the compass.

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  • When data of this character have been obtained the compass deviations may be mechanically corrected to within i° - always adhering to the principal that "like cures like."

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  • Thus the part of B caused by the permanent magnetism of hard iron must be corrected by permanent magnets horizontally placed in a fore and aft direction; the other part caused by vertical soft iron by means of bars of vertical soft iron, called Flinders bars, before or abaft the compass.

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  • C is compensated by permanent magnets athwartships and horizontal; D by masses of soft iron on both sides of the compass, and generally in the form of cast-iron spheres, with their centres in the same horizontal plane as the needles; E is usually too small to require correction; A is fortunately rarely of any value, as it cannot be corrected.

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  • The deviation observed when the ship inclines to either side is due - (i) to hard iron acting vertically upwards or downwards; (2) to vertical soft iron immediately below the compass; (3) to vertical induction in horizontal soft iron when inclined.

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  • Although a compass may thus be made practically correct for a given time and place, the magnetism of the ship is liable to changes on changing her geographical position, and especially so when steaming at right angles or nearly so to the magnetic meridian, for then sub-permanent magnetism is developed in the hull.

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  • Hence, however carefully a compass may be placed and subsequently compensated, the mariner has no safety without constantly observing the bearings of the sun, stars or distant terrestrial objects, to ascertain its deviation.

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  • The results of these observations are entered in a compass journal for future reference when fog or darkness prevails.

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  • Every compass and corrector supplied to the ships of the British navy is previously examined in detail at the Compass Observatory established by the admiralty at Deptford.

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  • A museum containing compasses of various types invented during the 19th century is attached to the Compass Observatory at Deptford.

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  • The mariner's compass during the early part of the 19th century was still a very imperfect instrument, although numerous inventors had tried to improve it.

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  • In 1837 the Admiralty Compass Committee was appointed to make a scientific investigation of the subject, and propose a form of compass suitable alike for azimuth and steering purposes.

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  • The committee reported in July 1840, and after minor improvements by the makers the admiralty compass, the card of which is shown in figs.

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  • Until 1876, when Sir William Thomson introduced his patent compass, this compass was not only the regulation compass of the British navy, but was largely used in other countries in the same or a modified form.

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  • The introduction of powerful engines causing serious vibration to compass cards of the admiralty type, coupled with the prevailing desire for larger cards, the deviation of which could also be more conveniently compensated, led to the gradual introduction of the Thomson compass.

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  • The first liquid compass used in England was invented by Francis Crow, of Faversham, in 1813.

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  • It is said that the idea of a liquid compass was suggested to Crow -by the experience of the captain of a coasting vessel whose compass card was oscillating wildly until a sea broke on board filling the compass bowl, when the card became steady.

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  • In 1888 the form of liquid compass (fig.

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  • It has also proved to be the most trustworthy compass under the shock of heavy gun fire at present available.

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  • The deflector is an instrument designed to enable an observer to reduce the deviations of the compass to an amount not exceeding 2 0 during fogs, or at any time when bearings of distant objects are not available.

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  • It is certain that if the directive forces on the north, east, south and west points of a compass are equal, there can be no deviation.

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  • ii.) that the abnormal values of the variation observed in the wood-built ships of his day was due to deviation of the compass caused by the iron in the ship; that the deviation was zero when the ship's head was near the north and south points; that it attained its maximum on the east and west points, and varied as the sine of the azimuth of the ship's head reckoned from the zero points.

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  • Johnson, R.N., showed from experiments in the iron steamship "Garry Owen" that the vessel acted on an external compass as a magnet.

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  • Trans., 1839) deduced his method of correcting the compass by permanent magnets and soft iron, giving practical rules for the same in 1840.

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  • Airy's and Flinders's correctors form the basis of all compass correctors to this day.

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  • In 1855 the Liverpool Compass Committee began its work of investigating the magnetism of ships of the mercantile marine, resulting in three reports to the Board of Trade, all of great value, the last being presented in 1861.

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  • See also Magnetism, and Navigation; articles on Magnetism of Ships and Deviations of the Compass, Phil.

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  • 1862- 1863-1869 -1893-1900; and Towson's Practical Information on Deviations of the Compass (1886).

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  • C.) History of the Mariner's Compass.

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  • The Chinese, the Arabs, the Greeks, the Etruscans, the Finns and the Italians have all been claimed as originators of the compass.

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  • There is no genuine record of a Chinese marine compass before A.D.

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  • The Chinese name for the compass is ting-nan-ching, or needle pointing to the south; and a distinguishing mark is fixed on the magnet's southern pole, as in European compasses upon the northern one."

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  • The Chinese had soon occasion to perceive how much more essential the perfection of the compass was to the superior navigators of Europe than to themselves, as the commanders of the ` Lion ' and ` Hindostan,' trusting to that instrument, stood out directly from the land into the sea."

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  • The number of points of the compass, according to the Chinese, is twenty-four, which are reckoned from the south pole; the form also of the instrument they employ is different from that familiar to Europeans.

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  • On the other hand, it has been contended that a knowledge of the mariner's compass was communicated by them directly or indirectly to the early Arabs, and through the latter was introduced into Europe.

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  • Gunpowder, the compass, the Arabic numerals and paper, are nowhere spoken of as discoveries, and yet they must have wrought a total change in war, in navigation, in science, and in education.

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  • Robertson asserts (Historical Disquisition concerning Ancient India, p. 227) that the Arabs, Turks and Persians have no original name for the compass, it being called by them Bossola, the Italian name, which shows that the thing signified is foreign to them as well as the word.

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  • I have nothing but argument to offer touching this matter, having never met with any person in Persia or the Indies to inform me when the compass was first known among them, though I made inquiry of the most learned men in both countries.

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  • That the Arabs must have been acquainted with the compass, and with the construction and use of charts, at a period nearly two centuries previous to Chardin's first voyage to the East, may be gathered from the description given by Barros of a map of all the coast of India, shown to Vasco da Gama by a Moor of Guzerat (about the 15th of July 1498), in which the bearings were laid down "after the manner of the Moors," or "with meridians and parallels very small (or close together), without other bearings of the compass; because, as the squares of these meridians and parallels were very small, the coast was laid down by these two bearings of N.

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  • and W., with great certainty, without that multiplication of bearings of the points of the compass usual in our maps, which serves as the root of the others."

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  • Stanley, p. 138.) Also the Arabs that navigated the Red Sea at the same period are shown by Varthema to have used the mariner's chart and compass (Travels, p. 31) .

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  • The Arab traders in the Levant certainly used a floating compass, as did the Italians before the introduction of the pivoted needle; the magnetized piece of iron being floated upon a small raft of cork or reeds in a bowl of water.

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  • The Turkish compass consists but of 8 points, the four Cardinal and the four Collateral."

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  • That the value of the compass was thus, even in the latter part of the r 7th century, so imperfectly recognized in the East may serve to explain how in earlier times that instrument, long after the first discovery of its properties, may have been generally neglected by navigators.

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  • chap. 9, part 2); but the earliest definite mention as yet known of the use of the mariner's compass in the middle ages occurs in a treatise entitled De utensilibus, written by Alexander Neckam in the r 2th century.

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  • 3 Brunetto Latini also makes reference to the compass in his encyclopaedia Livres dou tre.

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  • Torfaeus we learn that the compass, fitted into a box, was already in use among the Norwegians about the middle of the 13th century (Hist.

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  • The earliest unquestionable description of a pivoted compass is that contained in the remarkable Epistola de magnete of Petrus Peregrinus de Maricourt, written at Lucera in 1269 to Sigerus de Foncaucourt.

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  • In the second part Peregrinus describes first an improved floating compass with fiducial line, a circle graduated with 90 degrees to each quadrant, and provided with movable sights for taking bearings.

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  • He then describes a new compass with a needle thrust through a pivoted axis, placed in a box with transparent cover, cross index of brass or silver, divided circle, and an external "rule" or alhidade provided with a pair of sights.

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  • In the Leiden MS. of this work, which for long was erroneously ascribed to one Peter Adsiger, is a spurious passage, long believed to mention the variation of the compass.

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  • Prior to this clear description of a pivoted compass by Peregrinus in 1269, the Italian sailors had used the floating magnet, probably introduced into this region of the Mediterranean by traders belonging to the port of Amalfi, as commemorated in the line of the poet Panormita: "Prima dedit nautis usum magnetis Amalphis."

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  • From this passage arose a legend, which took shape only in the 17th century, that the compass was invented in the year 1302 by a person to whom was given the fictitious name of Flavio Gioja, of Amalfi.

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  • From the above it will have been evident that, as Barlowe remarks concerning the compass, "the lame tale of one Flavius at Amelphus, in the kingdome of Naples, for to have devised it, is of very slender probabilitie"; and as regards the assertion of Dr Gilbert, of Colchester (De magnete, p. 4, 1600), that Marco Polo introduced the compass into Italy from the East in 1260, 1 we need only quote the words of Sir H.

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  • Yule (Book of Marco Polo) " Respecting the mariner's compass and gunpowder, I shall say nothing, as no one now, I believe, imagines Marco to have had anything to do with their introduction."

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  • When, and by whom, the compass card was added is a matter of conjecture.

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  • Certainly the Rosa Ventorum, or Wind-rose, is far older than the compass itself; and the naming of the eight principal "winds" goes back to the Temple of the Winds in Athens built by Andronicus Cyrrhestes.

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  • The north point, indicated in some of the oldest compass cards with a broad arrow-head or a spear, as well as with a T for Tramontano, gradually developed by a combination of these, about 1492, into a fleur de lis, still universal.

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  • Da Buti, the Dante commentator, in 1380 says the sailors use a compass at the middle of which is pivoted a wheel of light paper to turn on its pivot, on which wheel the needle is fixed and the star (wind-rose) painted.

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  • The term binnacle, originally bittacle, is a corruption of the Portuguese abitacolo, to denote the housing enclosing the compass, probably originating with the Portuguese navigators.

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  • The improvement of the compass has been but a slow process.

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  • He introduced a pattern having four or five parallel straight strips of magnetized steel fixed under a card, a form which remained the standard admiralty type until the introduction of the modern Thomson (Kelvin) compass in 1876.

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  • Compass plant >>

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  • Three weeks after his coronation Martin excommunicated the Greek emperor and all his subjects, and allied himself with Charles of Anjou and the Venetians to compass his downfall.

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  • Owing to proximity to the magnetic compass the whole of the tube must be non-magnetic. High-strength bronze was used in the earlier practice in the British navy.

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  • The exchange (Borsen), on the quay to the east, is an ornate gabled building erected in 1619-1640, surmounted by a remarkable spire, formed of four dragons, with their heads directed to the four points of the compass, and their bodies entwining each other till their tai, come to a point at the top. To the south is the arsenal (Tbjhus) with a collection of ancient armour.

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  • " Let us fix our attention out of ourselves as much as possible; let us chase our imagination to the heavens or to the utmost limits of the universe; we never really advance a step beyond ourselves, nor can conceive any kind of existence, but those perceptions which have appeared in that narrow compass.

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  • The essential difference between monks and regular canons may be explained as follows: monks, whether hermits or cenobites, are men who live a certain kind of life for its own sake, for the purpose of leading a Christian life according to the Gospel's counsel and thus serving God and saving their own souls; external works, either temporal or spiritual, are accidental; clericature or ordination is an addition, an accession, and no part of their object, and, as a matter of fact, till well on in the middle ages it was not usual for monks to be priests; in a word, the life they lead is their object, and they do not adopt it in order the better to compass some other end.

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  • The town occupies chiefly the acclivity of Compass Hill, and while of picturesque appearance is built in a very irregular manner, the streets being narrow and precipitous.

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  • Even this second circuit, however, was of small compass, and it was not till 1320-1330 that a third line took in the greater part of the modern site of the city proper.

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  • As the curtain approached, the compass needle always deviated to the west, oscillated as the curtain passed the zenith, and then deviated to the east.

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  • The direction in which the compass needle deviated was west or east, according as the curtain approached from the south or the north; as the curtain retired the deviation eventually diminished.

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  • His mythological or pastoral dramas, his great satiric epos of Adam Homo (1841-1848), his comedies, his lyrics, and above all his noble philosophic tragedy of Kalanus, prove the immense breadth of his compass, and the inexhaustible riches of his imagination.

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  • It was therefore clearly necessary with regard to both the older and the newer law to take some steps to collect into one or more bodies or masses so much of the law as was to be regarded as binding, reducing it within a reasonable compass, and purging away the contradictions or inconsistencies which it contained.

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  • But let it be observed, first, that to reduce the huge and confused mass of pre-existing law into the compass of these two collections was an immense practical benefit to the empire; secondly, that, whereas the work which he undertook was accomplished in seven years, the infinitely more difficult task of codification might probably have been left unfinished at Tribonian's death, or even at Justinian's own, and been abandoned by his successor; thirdly, that in the extracts preserved in the Digest we have the opinions of the greatest legal luminaries given in their own admirably lucid, philosophical and concise language, while in the extracts of which the Codex is composed we find valuable historical evidence bearing on the administration and social condition of the later Pagan and earlier Christian empire; fourthly, that Justinian's age, that is to say, the intellect of the men whose services he commanded, was quite unequal to so vast an undertaking as the fusing upon scientific principles into one new organic whole of the entire law of the empire.

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  • It is much disputed what the original compass of the Decalogue was.

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  • The detail of these raids is quite beyond the compass of the present article, and a summary or synopsis must suffice.

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  • Compass Hill (450 ft.) on the E.

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  • He was the last of those universal minds which have been able to compass all domains of human activity and knowledge; for he stood on the brink of an era of rapidly expanding knowledge which has made for ever impossible the universality of interest and sympathy which distinguished him.

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  • which, like the biblical legislative ideas, cannot be adequately examined within the narrow compass of the Old Testament alone.

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  • Before leaving it for Queen's College, Oxford, in 1673, he had observed the change in the variation of the compass, and at the age of nineteen, he supplied a new and improved method of determining the elements of the planetary orbits (Phil.

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  • The results were published in a General Chart of the Variation of the Compass in 1701; and immediately afterwards he executed by royal command a careful survey of the tides and coasts of the British Channel, an elaborate map of which he produced in 1702.

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  • The whole structure was roughly orientated, with the corners towards the cardinal points of the compass.

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  • Praiseworthy efforts to compass the first end have been made in recent legislation.

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  • It consisted simply of a light metallic needle balanced on a pivot like a compass needle.

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  • Feeling the difficulty of supposing that all the ancient minstrels sang of the " wrath of Achilles " or the " return of Ulysses " (leaving out even the capture of Troy itself), he was led to assume that two poems of no great compass dealing with these two themes became so famous at an early period as to throw other parts of the Trojan story into the background, and were then enlarged by successive generations of rhapsodists.

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  • A number of the chief gods, sometimes four, but generally eight of them, now appear as lokapalas or world-guardians, having definite quarters or intermediate quarters of the compass assigned to them as their special domains.

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  • These are, briefly speaking, the decay of those great fabrics, church and empire, which ruled the middle ages both as ideas and as realities; the development of nationalities and languages; the enfeeblement of the feudal system throughout Europe; the invention and application of paper, the mariner's compass, gunpowder, and printing; the exploration of continents beyond the ocean; and the substitution of the Copernican for the Ptolemaic system of astronomy.

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  • Oersted's important discovery was the fact that when a wire joining the end plates of a voltaic pile is held near a pivoted magnet or compass needle, the latter is deflected and places itself more or less transversely to the wire, the direction depending upon whether the wire is above or below the needle, and on the manner in which the copper or zinc ends of the pile are connected to it.

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  • He found that a vibrating magnetic compass needle came to rest sooner when placed over a plate of copper than otherwise, and also that a plate of copper rotating under a suspended magnet tended to drag the magnet in the same direction.

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  • Pouillet in 1837 contributed the sine and tangent compass, and W.

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  • With this his dominion would have attained much the same compass as later under Lysimachus; farther than.

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  • The introduction of the clinical thermometer, which allows us to ascertain exactly the amount to which the temperature rises in fever or to which it is reduced by antipyretic measures, is to the physician like the compass to the sailor, and allows him to steer safely between two extremes.

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  • His style has frequently been blamed for its obscurity and difficulty, but this is due to two causes: his habit of compressing his arguments into narrow compass, and of always writing with the opposite side of the case in view, so that it has been said of the Analogy that it raises more doubts than it solves.

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  • In his experiments a long compass needle is mounted so as to swing in the surface of the liquid under investigation.

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  • The town (which is often called "the metallurgical capital of Wales") is the chief seat of the copper, spelter, tin-plate and patent fuel industries, and has within a compass of 4 m.

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  • Varro was not surpassed in the compass of his writings by any ancient, not even by any one of the later Greek philosophers, to some of whom tradition ascribes a fabulous number of separate works.

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  • The town, in the shape of a rectangular parallelogram, with the corners pointing approximately toward the cardinal points of the compass, covered 741 acres of ground.

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  • It is probable that these small but practical concessions would have satisfied the lay Roman Catholics and the secular priests, but they were very far from contenting the Jesuits, by whom the results of such leniency were especially feared: "What rigour of laws would not compass in so many years," wrote Henry Tichborne, the Jesuit, in 1598, "this liberty and lenity will effectuate in 20 days, to wit the disfurnishing of the seminaries, the disanimating of men to come and others to return, the expulsion of the society and confusion as in Germany, extinction of zeal and favour, disanimation of princes from the hot pursuit of the enterprise..

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  • An insect with wings thus hinged may, as far as steadiness of body is concerned, be not inaptly compared to a compass set upon gimbals, where the universality of motion in one direction ensures comparative fixedness in another."

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  • In both orographical systems the principal rivers start nearly all together from a central nucleus, and in both cases they radiate to opposite quarters of the compass; but whereas in the Alps the Rhone and the Rhine, flowing south-west and north-east respectively, follow longitudinal valleys, and the Aar and the Ticino, flowing north-west and south-east respectively, follow transverse valleys, in the Caucasus the streams which flow south-west and north-east, namely, the headwaters of the Rion and the Terek, travel along transverse valleys, and those of the Kura and the Kuban, flowing south-east and north-west respectively, traverse longitudinal valleys.

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  • Although the Avesta is a work of but moderate compass (comparable, say, to the Iliad and Odyssey taken together), there nevertheless exists no single MS. which gives it in entirety.

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  • 19) gives to the whole city, continental and insular, a compass of 19 Roman miles; but this account must be received with caution.

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  • It is, indeed, if not the most amusing of Swift's satirical works, the most strikingly original, and the one in which the compass of his powers is most fully displayed.

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  • If we suppose the sun's mass once existed in a state of extreme diffusion, the energy yielded by collecting it into its present compass would not suffice to maintain its present rate of radiation for more than 17,000,000 years in the past; nor if its mean density were ultimately to rise to eight times its present amount, for more than the same period in the future.

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  • His attention was also turned to the subject of compass needles, his Bakerian lecture "On the Best Kind of Steel and Form for a Compass Needle" (Phil.

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  • In the Sneeuwberg range is Compass Berg, 8500 ft.

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  • The points of the compass might similarly be expressed by numbers in a binary scale; but the numbers would be ordinal, and the expressions would be analogous to those of decimals rather than to those of whole numbers.

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  • It has been stated that "in the compass of a single week, and that for years, he spoke in general forty hours, and in very many sixty, and that to thousands."

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  • For the present the contention of the American colonists and of the defenders of Wilkes at home was confined within the compass of the law.

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  • Yet in both cases it might easily pass beyond that compass, and might rest itself upon an appeal to the duty of governments to modify the law, and to enlarge the basis of their authority, when law and authority have become too narrow.

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  • It is too often the case to be a mere accident that men who become eminent for wide compass of understanding and penetrating comprehension, are in their adolescence unsettled and desultory.

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  • This important ore of iron is most celebrated for its magnetic properties (see Magnetism and Compass), but the mineral is not always magnetic, although invariably attracted by a magnet.

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  • In fact, while trying to compass the destruction of the republican movement of the Left, he was taking careful steps to gain over all classes.

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  • Venice, the duchy of Milan and the duke of Modena were on his side; the pope and the grandduke of Tuscany were trembling, but the romantic expedition of the duke of Guise to Naples, and the outbreak of the Fronde, saved Spain, who had refused to take part in the treaties of Westphalia and whose ruin Mazarin wished to compass.

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  • He at once endeavoured to compass the overthrow of Arnold of Brescia, the leader of anti-papal sentiment in Rome.

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  • One object of the pony breeder, while maintaining hardiness of constitution, is to control size - to compress the most valuable qualities into small compass.

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  • At that time the " compass " microscope was in use.

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  • One leg of a compass carried the object, and the other the lens, the distance between the two being regulated by a screw.

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  • It was in 1873 that he undertook to write a series of articles for Good Words on the mariner's compass.

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  • In the meanwhile the compass went through a process of complete reconstruction in his hands, a process which enabled both the permanent and the temporary magnetism of the ship to be readily compensated, while the weight of the bo-in.

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  • Second only to the compass in its value to the sailor is Thomson's sounding apparatus, whereby soundings can be taken in 100 fathoms by a ship steaming at 16 knots; and by the employment of piano-wire of a breaking strength of 140 tons per square inch and an iron sinker weighing only 34 lb, with a selfregistering pressure gauge, soundings can be rapidly taken in deep ocean.

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  • The city is in great part laid out in rectangular squares, the streets running nearly with the cardinal points of the compass.

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  • She'd left him the soul compass and his soul in her jewelry box, along with the ring he gave her, so he knew they were intended for him.

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  • He lifted a small soul-tracking device off the table, a round compass whose edges were lined with symbols from a dead language too old for him to read.

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  • They got another compass.

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  • He studied the compass.

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  • "If it makes you feel better, I've got another traitor," Gabriel said in cold anger, motioning to the soul compass the demon's had obtained.

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  • Clearly you found the compass.

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  • Gabriel thought back to the three items he'd discovered in her jewelry box: the compass, a soul and the tarnished ring he gave her hundreds of years ago.

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  • He took the soul compass only.

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  • Tamer, Rhyn's half-brother and the least friendly member of the Council, had deciphered five of the twenty symbols on the compass.

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  • Muscular and dark-skinned, Tamer was hunched over the table in the center of the room, putting the final magic touches on a new compass.

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  • "Alright. Here's another," Tamer said and held out the compass.

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  • He lifted the compass first.

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  • Guessing the compass only worked in the mortal world, Gabe emplaced it around his neck before picking up the green emerald – the form a soul took after death – and peering at it.

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  • He plucked the compass from his chest and waited to see what it did.

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  • The compass grew hot against his chest.

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  • In the meantime, he'd learn to use the compass better and decipher the symbols.

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  • No matter where the compass pointed, it led him to the correct body.

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  • He pulled off the compass and held it out.

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  • He tossed it on the table with a thud then set the compass on top.

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  • The writing on the tablet was too faded to make out, and the symbols he did see looked nothing like those on the compass.

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  • "The writing on this is from the time-before-time," Tamer said, motioning to the compass.

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  • How old is the compass?

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  • This compass is only a few thousand years old.

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  • Wariness crossed Tamer's face as he realized what the compass did.

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  • As soon as another compass is ready, send a dealer out with it.

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  • She held out something that looked like a compass.

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  • "Soul compass," he said, not expecting the tool.

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  • He debated which he trusted less: the Ancient Immortal that made the compass or the death-dealers that carried them.

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  • Gabe asked, holding up the compass.

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  • "Thanks," he said and tucked the compass away.

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  • I figured out a few of the symbols on your compass.

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  • He flipped the notebook open to show a neatly sketched diagram of the compass with the ones he'd interpreted highlighted.

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  • I think the compass tells you what kind of soul it is.

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  • What if the demons were choosing which souls they wanted, based on the compass readings?

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  • Darkyn was old enough to read the compass.

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  • Gabe handed him the soul compass he'd found on the demon's body.

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  • Sarah related whole story, ending with, "Never thought I'd see the day that man would have a moral compass, let alone be one."

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  • For over 30 years, Compass Gallery has set a precedent of visiting all the Scottish shows.

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  • The HMR3300 is a three-axis, tilt compensated compass that uses a two-axis accelerometer for enhanced performance up to a 60° tilt range.

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  • Modified BPW A-frame & Handbrake All Compass models feature the new modified A-frame to the BPW Swing V-Tech chassis.

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  • The Suunto X6HR is a combined altimeter, Barometer, Compass and heart rate monitor with PC interface.

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  • anemometer cups dawdled on a simpering breeze which was satisfied to box the compass and presently expire.

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  • It turned out that it had a simple autopilot to keep it in level flight, at a set altitude and compass bearing.

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  • To measure an azimuth, simply turn your entire body toward the object, pointing the compass cover directly at the object.

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  • Magnetic variation occurs and must be added to - or subtracted from - the actual compass reading to give the true azimuth.

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  • NOTE: 1. Once the map is oriented, magnetic azimuths are determined using the compass.

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  • bearing compass.

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  • compass bearings are given only to false point accuracy.

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  • The oscillator was rotated by a brass wheel on the side of the compass binnacle, the two being connected by a steel cable.

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  • calibrate the compass.

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  • A 21 key chanter is also possible with a reflexed bore to bring the lowest keys within reach - compass g to b 11.

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  • clinging for dear life from a vertical rock face and you don't want to drop a compass.

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  • Most depended upon survey using the mariner's compass.

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  • The legs were chosen so as to include both wall corners which had been chosen to calibrate the compass.

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  • fetching a compass more Westwards, these places present themselves to view.

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  • The prismatic compass does not have to be tripod mounted to be read to * or - 0.5°, but clinometers do.

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  • Although different models of the lensatic compass vary somewhat in the details of their use, the principles are the same.

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  • Has anyone, anywhere, ever gotten accuracy that good from a magnetic compass?

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  • She has the strongest moral compass of anyone I know.

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  • ACCURATE READINGS The electronic compass has a bubble level for accurate readings.

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  • Within this narrow compass, he achieves remarkable diversity of structure and emotional tone.

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  • compass bearings are given only to false point accuracy.

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  • compass needle follows these lines.

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  • compass binnacle, the boat is set for increased comfort and safety.

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  • Compass Binoculars There is no doubt that compass Binoculars There is no doubt that compass binoculars have become very popular for marine use.

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  • compass deviation events reported here were the result of these well known phenomena.

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  • compass rose which shows continuously updated wind direction and wind speed information.

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  • For the same reason the gyro compass was not working.

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  • For five miles I rode south, striking a tinder from time to time to look at my pocket compass.

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  • The amount this differs from the baseline provided by the precision compass is plotted.

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  • Brass compass Know where you are going at all times with this sensible brass hand bearing compass.

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  • crouched together into the smallest possible compass, his luminous green eyes turned over his shoulder regarding me.

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  • A strong magnet held on one side of the hand can easily deflect a compass needle on the other side of the same hand.

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  • None of the compass deviation events reported here were the result of these well known phenomena.

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  • What about drawing diagrams in maths or using a compass?

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  • The alignment of the temple with the compass directions emphasizes its basis in the world.

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  • A Secretary of State who calls Martin McGuinness " Babe " has a pretty dodgy moral compass.

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  • Enough copies of worksheets etc. Notebook, sketchbook, camera, tape recorder, magnifiers, water dropper bottles, tape measure, compass.

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  • All points of the compass were suddenly enveloped in darkness.

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  • We will be assisted in due course by the implementation of COMPASS and the ability to monitor the ethnicity of offenders and victims.

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  • fetching a compass more Westwards, these places present themselves to view.

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  • They are not only permanent fixtures of our way of life, they also provide our security policies with a moral compass.

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  • With all the hot weather, Compass Rangers still found time to have a chocolate fondue during exams in order to help them relax.

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  • gyro compass was not working.

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  • Repeater Compasses The indications of the master gyro compass can be transmitted to almost any number of repeater compasses.

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  • Sight through the rear sight and the window in the mirror and align the hairline at the reflection of the face of the compass.

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  • The Hx and Hy information can be used to determine compass headings in reference to the magnetic poles.

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  • When the compass is on the new heading, put the helm hard over to port.

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  • One of these faults is that of allowing the helmsman to steer otherwise than by the compass.

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  • only hyphenate compass points and fractions if they make a compound, eg southeast England, two-thirds full.

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  • The compass stays out nonetheless, to avoid inadvertent straying onto the ridge connecting with Ben More Assynt.

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  • As Carr says a compass " is a valuable and indeed indispensable guide.

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  • inductor compass.

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  • The second phase, known as Compass, is the procurement of a managed service through a private finance initiative contract.

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  • lubber line on the body of the compass.

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  • The plane was a mess; the only instruments left working were a small magnetic compass, the airspeed indicator and altimeter.

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  • The compass revealed nothing of the nature of terrestrial magnetism to the medieval thinker.

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  • mariner's compass.

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  • The needles run over Betty's body have their obvious source in the compass needle run over the car.

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  • One group went off to do orienteering during the morning, enabling them to learn how to use a map and compass.

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  • Each of the four compass points around the atom symbol in a Lewis diagram represents one of the four possible positions for electron pairs.

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  • prismatic compass; clinometer; metallic or steel tape; bearings to nearest degree.

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  • Their followers willingly " compass sea and land to make one proselyte " (Matt.

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  • The dial also has a sun compass function Has a 10 hour ratchet operated rotating bezel, with bezel rider tabs for easy gripping.

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  • The chanter, based on the Highland pattern is longer and fitted with keywork to extend the compass and give semitones as required.

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  • Honeywell's magnetoresistive sensors are utilized to provide the reliability and accuracy of these small, solid state compass designs.

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  • Within his bending sickle 's compass come; which alters when it alteration finds, it is the star to every wand'ring bark.

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  • sickle's compass come; which alters when it alteration finds, it is the star to every wand'ring bark.

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  • John Hitchcock made spinets with a compass of five octaves; some are known bearing dates between 1620 and 1640.

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  • stammering children and City University's COMPASS center.

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  • Then align the straightedge, which is on the left side of the compass, alongside the drawn line on the map.

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  • Consider training for this event by running on mountain terrain where possible and by practicing fine map reading and compass skills.

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  • These calculations are little more than three-dimensional trigonometry in most cases involving converting tape, compass and clino measurements into an XYZ vector.

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  • trigonometry in most cases involving converting tape, compass and clino measurements into an XYZ vector.

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  • Being up to my neck in cold water whilst trying to get readings from a temperamental compass and clinometer sounded deeply unpleasant.

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  • Ahead, Bryson, no compass, had gone walkabout.

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  • If Ritschl had clearly shown that judgments of value enfold and transform other types of knowledge, just as the "spiritual man" includes and transfigures but does not annihilate the "natural man," then within the compass of this spiritually conditioned knowledge all other knowledge would be seen to have a function and a home.

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  • The only difference to be reckoned with may be in recent tendencies of solo vocalists to sing for effect, and so to extend the compass of the voice upwards.

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  • In 1727 he gained the prize given by the Academie des Sciences for his paper "On the best manner of forming and distributing the masts of ships"; and two other prizes, one for his dissertation "On the best method of observing the altitude of stars at sea," the other for his paper "On the best method of observing the variation of the compass at sea."

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  • The city is built with its streets running between the cardinal points of the compass and crossing each other at right angles.

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  • His experimental investigations are carried out with plain and usually home-made apparatus, the accessories being crude and rough, but the essentials thoughtfully designed so as to compass in the simplest and most perfect manner the special end in view.

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  • Those instruments of which the tones and compass are most suitable for polyphonic melody are for the most part high in pitch; a circumstance which, in conjunction with the practice (initiated by the monodists and ratified by science and common sense) of reckoning chords upwards from the bass, leads to the conclusion that the instruments which hold the main threads in the design shall be supported where necessary by a simple harmonic filling-out on some keyed instrument capable of forming an unobtrusive background.

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  • Having dwelt in that egg for a year, that lord spontaneously by his own thought split that egg in two; and from the two halves he fashioned the heaven and the earth, and in the middle,the sky,and the eight regions (the points of the compass), and the perpetual place of the waters.

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  • The apex in this case will describe a circle, or rather a spiral, as it is elongating all the time, pointing to all points of the compass in succession.

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  • This great event was preceded by the general Portu- utilization in Europe of the polarity of the magnetic guese ex- needle in the construction of the mariner's compass.

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  • Amongst the most important of his works not already mentioned may be named the following: - Mathematical Tracts (1826) on the Lunar Theory, Figure of the Earth, Precession and Nutation, and Calculus of Variations, to which, in the second edition of 1828, were added tracts on the Planetary Theory and the Undulatory Theory of Light; Experiments on Iron-built Ships, instituted for the purpose of discovering a correction for the deviation of the Compass produced by the Iron of the Ships (1839); On the Theoretical Explanation of an apparent new Polarity in Light (1840); Tides and Waves (1842).

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  • on the compass card, and so surmounted it with the fleur-de-lys, traditionally chosen for that purpose on the compass by Flavio Gioja in honour of Charles of Anjou, king of Sicily and Naples.

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  • Its presence contributes to the dark colour of many basalts and other basic rocks, and may cause them to disturb the compass.

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  • to his own, the royalists began to compass the death of the man whom they had at first naively looked on as a potential General Monk to their Charles II.

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  • On the better farms this is done with a spirit-level or compass from time to time and hillside ditches put in at the proper places.

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  • The cotton is pressed locally and afterwards " compressed " into a very small compass.

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  • in diameter; the eight sides, which face the points of the compass, are furnished with a frieze containing inartistic figures in relief representing the winds; below it, on the sides facing the sun, are the lines of a sun-dial.

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  • High above all the medley of kindreds and tongues, untrammelled by national traditions, for he had outgrown the compass of any one nation, invested with the glory of achievements in which the old bounds of the possible seemed to fall away, stood in 324 the man Alexander.

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  • Other accessories are an hour-circle, around the north pole, a compass placed beneath the globe, and a flexible quadrant used for finding the distances between places.

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  • A further difficulty arose in connexion with the variation of the compass, which induced Pedro Reinel Behaim'S Globe 1492 Fig.

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  • The first maps illustrating the variation of the compass were published by Chris.

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  • Delisle in 19 sheets (1739-1745); charts illustrating the variation of the compass and of magnetic " dip " by E.

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  • It was a mile in diameter, built in concentric circles, with the mosque and palace of the caliph in the centre, and had four gates toward the four points of the compass.

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  • Upon one of these is based the principle of the mariner's compass, which is said to have been known to the Chinese as early as I ioo B.C., though it was not introduced into Europe until more than 2000 years later; a magnet supported so that its axis is free to turn in a horizontal plane will come to rest with its poles pointing approximately north and south.

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  • Some of the principal phenomena of magnetism may be demonstrated with very little apparatus; much may be done with a small bar-magnet, a pocket compass and a few ounces of iron filings.

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  • The compass needle is a little steel magnet balanced upon a pivot; one end of the needle, which always bears a distinguishing mark, points approximately, but not in general exactly, to the north,' the vertical plane through the direction of the needle being termed the magnetic meridian.

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  • If one pole of the bar-magnet is brought near the compass, it will attract the opposite pole of the compass-needle; and the magnetic action will not be sensibly affected by the interposition between the bar and the compass of any substance whatever except iron or other magnetizable metal.

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  • A south pole would be urged oppositely to the conventional " direction " of the line; hence it follows that a very small magnetic needle, if placed in the field, would tend to set itself along or tangentially to the line of force passing through its centre, as may be approximately verified if the compass be placed among the filings on the cardboard.

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  • It is however easy to demonstrate by means of the compass that the force is much greater in some parts of the field than in others.

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  • Lay the compass upon the cardboard, and observe the rate at which its needle vibrates after being displaced from its position of equilibrium; this will vary greatly in different regions.

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  • When the compass is far from the magnet, the vibrations will be comparatively slow; when it is near a pole, they will be exceedingly rapid, the frequency of the vibrations varying as the square root of the magnetic force at the spot.

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  • A compass having a very short needle is placed on the line which bisects the axis of the magnet at right angles, and is moved until a neutral point is found where the force due to the earth's field H is balanced by that due to the magnet.

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  • of a crowd of small compass needles (representative of magnetic molecules) is proportional to the 1.6th power of the aggregate maximum magnetic moment before or after completion of the cycle.

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  • above them (thus A compass needle placed in the gap serves to detect any flow of induction that may exist between the bent bars.

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  • Suppose the switches to be adjusted so that the effective number of turns in the variable coil is loo; the magnetizing forces in the two coils will then be equal, and if the test rod is of the same quality as the standard, the flow of induction will be confined entirely to the iron circuit, the two yokes will be at the same magnetic potential, and the compass needle will not be affected.

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  • If, however, the permeability of the test rod differs from that of the standard, the number of lines of induction flowing in opposite directions through the two rods will differ, and the excess will flow from one yoke to the other, partly through the air, and partly along the path provided by the bent bars, deflecting the compass needle.

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  • But a balance may still be obtained by altering the effective number of turns in the test coil, and thus increasing or decreasing the magnetizing force acting on the test rod, till the induction in the two rods is the same, a condition which is fulfilled when reversal of the current has no effect on the compass needle.

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  • The effect of these is beautifully illustrated by a model consisting of a number of little compass needles pivoted on sharp points and grouped near to one another upon a board, which is placed inside a large magnetizing coil.

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  • The application of this property to the construction of the mariner's compass is obvious, and it is in connexion with navigation that the first references to it occur '(see' Compass).

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  • If the stichometry of Nicephorus is right, the existing form of the book is merely fragmentary compared with its original compass.

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  • On the breaking out of the Rye House Plot, of which neither he, Essex, nor Sidney had the slightest knowledge, he was accused by informers of promising his assistance to raise an insurrection and compass the death of the king.

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  • The more or less rectangular Roman city, orientated on the points of the compass, with its streets arranged at right angles, can be easily distinguished from the outer city, which received its fortifications in 1206 (see G.

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  • Again and again, during his absence on the public service, the barons and prelates would assemble to compass his ruin or dispose of his crown, when, suddenly, " like a tempest," from the depths of Silesia or of Bosnia, he would himself appear among them, confounding and scattering them, often without resistance, always without bloodshed.

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  • In February 1789, guided by compass, he traversed the country, practically unknown to white men, from Frederickstown to Quebec, falling in with Indians by the way, with whom he fraternized; and in a subsequent expedition he was formally adopted at Detroit by the Bear tribe of Hurons as one of their chiefs, and made his way down the Mississippi to New Orleans, whence he returned to England.

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  • i, Marking compass.

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  • The investigations on magnetism led to the important practical discovery of a means of rectifying or compensating compass errors in ships.

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  • Numerous lateral ramifying branches spread out from the main trunk in a horizontal direction, tier upon tier, covering a compass of ground the diameter of which is often greater than the height of the tree.

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  • Through affection she purifies the activity of the test of every institution, impulse, act; his fabric and knowledge at every point, is evidently beyond the compass of such an article as this.

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  • The speech is unfortunately lost, but Gibbon, who heard it, told his friend Holroyd (afterwards Earl of Sheffield) that Fox, "taking the vast compass of the question before us, discovered powers for regular debate which neither his friends hoped nor his enemies dreaded."

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  • amplus, large), in astronomy, the angular distance of the rising or setting sun, or other heavenly body, from the east or west point of the horizon; used mostly by navigators in finding the variation of the compass by the setting sun.

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  • The national love of works of large compass shows itself in the production of long epic poems, both of the historic and of the imitative Alexandrian type.

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  • Few writings of this compass afford more copious evidence of date in their literary affinities.

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  • Another of his works, Recensio canonica effectionum geometricarum, bears a stamp not less modern, being what we now call an algebraic geometry - in other words, a collection of precepts how to construct algebraic expressions with the use of rule and compass only.

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  • Vieta, however, did not accept it, as there existed a solution by means of the rule and the compass only, which he published himself in his Apollonius Gallus (1600).

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  • The town, which is situated at the foot of the wooded heights of Edugh, is surrounded with a modern rampart erected outside the old Arab wall, the compass of which was found too small for its growth.

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  • No one will, of course, question the importance of the schism which created the distinction between Protestants and Catholics, but it must always be remembered that the religious questions at issue comprised a relatively small part of the whole compass of human aspirations and conduct, even to those to whom religion was especially vital, while a large majority of the leaders in literature, art, science and public affairs went their way seemingly almost wholly unaffected by theological problems.

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  • The city is laid out with almost unbroken regularity and is compactly built - the streets running nearly with the cardinal points of the compass.

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  • Heat and cold, rain and drought, the winds in relation to the points of the compass, were nearest their wants and supplies, and were never out of their thoughts.

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  • It was used for taking the altitudes of sun, moon and stars; for calculating latitude; for determining the points of the compass, and time; for ascertaining heights of mountains, &c.; and for construction of horoscopes.

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  • Gioja's latest work Filosofia della statistica (2 vols., 1826; p vols., 1829-1830) contains in brief compass the essence of his ideas on human life, and affords the clearest insight into his aim and method in philosophy both theoretical and practical.

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  • Round the base is a flagged pathway surrounded by a stone railing and entered at the four points of the compass by gateways some 18 ft.

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  • He was not, however, destined to compass the downfall of the Sullan regime; the crisis of the Slave War placed the Senate at the mercy of Pompey and Crassus, who in 70 B.C. swept away the safeguards of senatorial ascendancy, restored the initiative in legislation to the tribunes, and replaced the Equestrian order, i.e.

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  • In the Nibelungenlied, however, the primitive supremacy of the blood-tie has given place to the more modern idea of the supremacy of the passion of love, and Kriemhild marries Attila (Etzel) in order to compass the death of her brothers, in revenge for the murder of Siegfried.

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  • But the very futility of the accusations must have betrayed to More the bitter determination of his enemies to compass his destruction.

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  • A carefully made ship's compass is usually employed, though in some cases the compass card, with its attached magnets, is made reversible, so that the inclination to the zero of the card of the magnetic axis of the system of magnets attached to the card can be eliminated by reversal.

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  • An attachment to the ordinary ship's compass, by means of which satisfactory measurements of the horizontal component have been made on board ship, is described by L.

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  • The principle of the method consists in deflecting the compass needle by means of a horizontal magnet supported vertically over the compass card, the axis of the deflecting magnet being always perpendicular to the axis of the magnet attached to the card.

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  • COMPASS (Fr.

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  • It is also more particularly applied to a mathematical instrument ("pair of compasses") for measuring or for describing a circle, and to the mariner's compass.

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  • The mariner's compass, with which this article is concerned, is an instrument by means of which the directive force of that great magnet, the Earth, upon a freely-suspended needle, is utilized for a purpose essential to navigation.

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  • - Compass Card.

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  • meridian, called the magnetic variation or declination; amongst mariners this angle is known as the variation of the compass.

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  • Following the first chart of lines of equal variation compiled by Edmund Halley in 1700, charts of similar type have been published from time to time embodying recent observations and corrected for the secular change, thus providing seamen with values of the variation accurate to about 30' of arc. Possessing these data, it is easy to ascertain by observation the effects of the iron in a ship in disturbing the compass, and it will be found for the most part in every vessel that the needle is deflected from the magnetic meridian by a horizontal angle called the deviation of the compass; in some directions of the ship's head adding to the known variation of the place, in other directions subtracting from it.

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  • The approaches to Cossack, North Australia; Cape St Francis, Labrador; the coasts of Madagascar and Iceland, are remarkable for such disturbance of the compass.

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  • The compass as we know it is the result of the necessities of navigation, which have increased from century to century.

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  • - Admiralty Compass FIG.

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  • Compass (Frame and Needles).

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  • - Section of Thomson's Compass Bowl.

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  • The section of a compass bowl in fig.

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  • 4 shows the general arrangement of mounting all compass cards in the bowl.

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  • 5 another form of compass called a liquid or spirit compass is shown partly in section.

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  • Great steadiness of card under severe shocks and vibrations, combined with a minimum of friction in the cap and pivot, is obtained with this compass.

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  • On the inside of every compass bowl a vertical black line is drawn, called the "lubber's point," and it is imperative FIG.

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  • - Liquid Compass.

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  • that when the compass is placed in the binnacle the line joining the pivot and the lubber's point be parallel to the keel of the vessel.

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  • in which the ship is steering and the north point of the compass or course is at once seen; and if the magnetic variation and the disturbing effects of the ship's iron are known, the desired angle between the ships's course and the geographical meridian can be computed.

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  • In every ship a position is selected for the navigating or standard compass as free from neighbouring iron as possible, and by this compass all courses are shaped and bearings taken.

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  • It is also provided with an azimuth circle or mirror and a shadow pin or style placed in the centre of the glass cover, by either of which the variable angle between the compass north and true north, called the "total error," or variation and deviation combined, can be observed.

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  • They are also fitted with different forms of suspension in which the compass is mounted to obviate the mechanical disturbance of the card caused by the vibration of the hull in ships driven by powerful engines.

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  • The effects of the iron and steel used in the construction of ships upon the compass occupied the attention of the ablest physicists of the i 9th century, with results which enable navigators to conduct their ships with perfect safety.

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  • The disturbance of the compass by the magnetism of the hull is generally modified, sometimes favourably, more often un favourably, by the magnetized fittings of the ship, such as masts, conning towers, deck houses, engines and boilers.

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  • Thus in every ship the compass needle is more or less subject to deviation differing in amount and direction for every azimuth of the ship's head.

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  • "Investigator" in 1800-1803, and in 1810 led that officer to introduce the practice of placing the ship's head on each point of the compass, and noting the amount of deviation whether to the east or west of the magnetic north, a process which is in full exercise at the present day, and is called "swinging ship."

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  • If an iron ship be swung when upright for deviation, and the mean horizontal and vertical magnetic forces at the compass positions be also observed in different parts of the world, mathematical analysis shows that the deviations are caused partly by the permanent magnetism of hard iron, partly by the transient induced magnetism of soft iron both horizontal and vertical, and in a lesser degree by iron which is neither magnetically hard nor soft, but which becomes magnetized in the same manner as hard iron, though it gradually loses its magnetism on change of conditions, as, for example, in the case of a ship, repaired and hammered in dock, steaming in an opposite direction at sea.

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  • Instead of observing the deviation solely for the purposes of correcting the indications of the compass when disturbed by the iron of the ship, the practice is to subject all deviations to mathematical analysis with a view to their mechanical correction.

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  • B has reference to horizontal forces acting in a longitudinal direction in the ship, and caused partly by the permanent magnetism of hard iron, partly by vertical induction in vertical soft iron either before or abaft the compass.

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  • D is due to transient induction in horizontal soft iron, the direction of which passes continuously under or over the compass.

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  • E is due to transient induction in horizontal soft iron unsymmetrically placed with regard to the compass.

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  • When data of this character have been obtained the compass deviations may be mechanically corrected to within i° - always adhering to the principal that "like cures like."

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  • Thus the part of B caused by the permanent magnetism of hard iron must be corrected by permanent magnets horizontally placed in a fore and aft direction; the other part caused by vertical soft iron by means of bars of vertical soft iron, called Flinders bars, before or abaft the compass.

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  • C is compensated by permanent magnets athwartships and horizontal; D by masses of soft iron on both sides of the compass, and generally in the form of cast-iron spheres, with their centres in the same horizontal plane as the needles; E is usually too small to require correction; A is fortunately rarely of any value, as it cannot be corrected.

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  • The deviation observed when the ship inclines to either side is due - (i) to hard iron acting vertically upwards or downwards; (2) to vertical soft iron immediately below the compass; (3) to vertical induction in horizontal soft iron when inclined.

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  • Although a compass may thus be made practically correct for a given time and place, the magnetism of the ship is liable to changes on changing her geographical position, and especially so when steaming at right angles or nearly so to the magnetic meridian, for then sub-permanent magnetism is developed in the hull.

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  • Hence, however carefully a compass may be placed and subsequently compensated, the mariner has no safety without constantly observing the bearings of the sun, stars or distant terrestrial objects, to ascertain its deviation.

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  • The results of these observations are entered in a compass journal for future reference when fog or darkness prevails.

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  • Every compass and corrector supplied to the ships of the British navy is previously examined in detail at the Compass Observatory established by the admiralty at Deptford.

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  • A museum containing compasses of various types invented during the 19th century is attached to the Compass Observatory at Deptford.

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  • The mariner's compass during the early part of the 19th century was still a very imperfect instrument, although numerous inventors had tried to improve it.

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