# Quadrant sentence example

quadrant

- The pilots were all Indians, and they used the forestaff and quadrant for their observations.
- The first root after zero is thus in the third quadrant, corresponding to m =1.
- The old method of giving quadrant elevation by clinometer was obviously too slow.
- 1) is a wooden quadrant in.
- There are three fronts; the principal, towards College Green, is a colonnade of the Ionic order, with façade and two projecting wings; it connects with the western portico by a colonnade of the same order, forming the quadrant of a circle.Advertisement
- Flamsteed, from measurements made in 1689 and succeeding years with his mural quadrant, similarly concluded that the declination of the Pole Star was 40" less in July than in September.
- Turning, therefore, to a globe, Asia, viewed as a whole, will be seen to have the form of a great isosceles spherical triangle, having its north-eastern apex at East Cape (Vostochnyi), in Bering Strait; its two equal sides, in length about a quadrant of the sphere, or 6500 m., extending on the west to the southern point of Arabia, and on the east to the extremity of the Malay peninsula; and the base between these points occupying about 60° of a great circle, or 4 500 m., and being deeply indented by the Arabian Sea and the Bay of Bengal on either side of the Indian peninsula.
- He ascertained the distribution of electricity among several spheres (whether equal or unequal) placed in contact in a straight line; and he measured the distribution of 2 In 1878 Clerk Maxwell repeated Cavendish's experiments with improved apparatus and the employment of a Kelvin quadrant electrometer as a means of detecting the absence of charge on the inner conductor after it had been connected to the outer case, and was thus able to show that if the law of electric attraction varies inversely as the nth power of the distance, then the exponent n must have a value of 2 t Isua.
- The astrolabe quadrant or cross-staff enabled the mariner to determine"his latitude with a certain amount of accuracy, but for his longitude 1 See fig.
- In speaking of quadrant elevation a brief reference was made to the necessity for making an allowance for difference of level of gun and target.Advertisement
- It is found that the alteration of the tangent elevation is almost insensible, but the quadrant elevation requires the addition or subtraction of the angle of sight.
- The first logarithms to the base e were published by John Speidell in his New Logarithmes (London, 1619), which contains hYPerbolic log sines, tangents and secants for every minute of the quadrant to 5 places of decimals.
- Quadrant electrometers have also been designed especially for measuring extremely small potential differences.
- - Kelvin's Quadrant Electrometer.
- If the two quadrants are at different potentials, the needle moves from one quadrant towards the other, and the image of a spot of light on the scale is therefore displaced.Advertisement
- The Federation, Cardassia, the Klingons, Romulans and all races in the alpha quadrant must learn to reconcile their differences and make peace to unite against a common (and deadly) enemy.
- Afterwards, Star Trek: Voyager took viewers to an unexplored quadrant of the galaxy and cut them from Starfleet contact.
- Following what was essentially a hunch, he traveled to a remote planet in the gamma quadrant and discovered his people's home world hiding in the darkness of space.
- The remaining survivors fled and scattered themselves across the delta quadrant and beyond.
- Q appears several times throughout the run of ST:NG, visits Star Trek: Voyager in the Delta Quadrant, and even Deep Space Nine.Advertisement
- His most dangerous 'trick' is when he tosses the Enterprise into the Delta Quadrant, where they meet the implacable Borg for the first time.
- She even makes the rebel captain Chakotay (Robert Beltran) her second in command, gives the convict Tom Paris a temporary Starfleet commission, and adds two Delta Quadrant natives to her crew as native guides.
- Captain Janeway came in for her share of criticism for various decisions she made during Voyager's sojourn in the Delta Quadrant; if you want to start a heated argument at a Star Trek convention, just say the work "Tuvix".
- Once the two crews are combined, a replacement is needed for Voyager's chief engineer, killed in the initial damage when Voyager was thrown to the Delta Quadrant.
- Janeway's task to hold her crew together and to integrate the Maquis and battling the Borg as they tried to return from the Delta Quadrant, gave her a unique perspective.Advertisement
- The big three was comprised of Commander Benjamin Sisko, a Starfleet officer and Major Kira Nerys, a Bajoran military officer and Security Offiicer Odo, a shape shifter from another quadrant.
- Star Trek Voyager provided more than one first in the Star Trek universe as the little ship entered a wormhole and found itself lost in the delta quadrant.
- He also compiled astronomical tables and a treatise on the quadrant.
- Xnyviaicos, ribbon), a quartic curve invented by Jacques Bernoulli (Acta Eruditorum, 1694) and afterwards investigated by Giulio Carlo Fagnano, who gave its principal properties and applied it to effect the division of a quadrant into 2 2 m, 3.2 m and 5.2 m equal parts.
- on the circle, and let M be another point on the circle so related to P that the ordinate PQ moves from A to 0 in the same time as the vector OM describes a quadrant.Advertisement
- In 1784 the French government decided that new tables of sines, tangents, &c., and their logarithms, should be calculated in relation to the centesimal division of the quadrant.
- The curve is symmetrical about the line x = y, and consists of two infinite branches asymptotic to the line x+y+a = o and a loop in the first quadrant.
- Symmetrical Electrometers include the dry pile electrometer and Kelvin's quadrant electrometer.
- - Quadrant Electrometer.
- (1760); " A Recommendation of Hadley's Quadrant for Surveying," ibid.Advertisement
- Missouri lies very frequently in the dangerous quadrant of the great cyclonic storms passing over the Mississippi valley - indeed, northern Missouri, lies in the area of maximum frequency of tornadoes.
- He had meantime (in 1742) been appointed to succeed Edmund Halley as astronomer royal; his enhanced reputation enabled him to apply successfully for an instrumental outfit at a cost of 1000; and with an 8-foot quadrant completed for him in 1750 by John Bird (1709-1776), he accumulated at Greenwich in ten years materials of inestimable value for the reform of astronomy.
- 2), with side AB =a c/2 and AD =c, is constructed, and the quadrant AEF is drawn with centre D and radius DA.
- He also invented a reflecting sextant for observing the distance between the moon and the fixed stars, - the same in every essential as the instrument which is still in everyday use at sea under the name of Hadley's quadrant.
- With Gunter's name are associated several useful inventions, descriptions of which are given in his treatises on the Sector, Cross-staff, Bow, Quadrant and other Instruments.Advertisement
- Gunter's Quadrant, an instrument made of wood, brass or other substance, containing a kind of stereographic projection of the sphere on the plane of the equinoctial, the eye being supposed to be placed in one of the poles, so that the tropic, ecliptic, and horizon form the arcs of circles, but the hour circles are other curves, drawn by means of several altitudes of the sun for some particular latitude every year.
- These suggestions took practical shape by a decree of the National Assembly in 1790 appointing a committee to consider the suitability of adopting either the length of the seconds pendulum, a fraction of the length of the equator or a fraction of the quadrant of the terrestrial meridian..
- 1265) at Maraga in Persia, and equipped with a mural quadrant of 12 ft.
- quadrant, and of a celestial globe 5 ft.
- Nevil Mas kelyne, who succeeded him in 1764, set on foot, in 1767, the publication of the Nautical Almanac, and about the same time had an achromatic telescope fitted to the Greenwich M aske mural quadrant.Advertisement
- It was the only parish church by Wren to have an apse, which was joined to the main body by a quadrant bay.
- Going further eastwards, nine houses had been constructed in the Quadrant, ideal for sea bathing quarters.
- The inflammatory mass around the cholecystocolic fistula in the right upper quadrant was left undisturbed to minimize operative morbidity.
- Again, these symbols indicate the nature of the transformations when moving from a hexagram in one quadrant to a hexagram in one quadrant to a hexagram in another.
- If the man does not individualize in quadrant two, then the therapist can proceed to ask quadrant four questions.Advertisement
- A small upper thoracic laminectomy is carried out and the anterolateral quadrant of the spinal cord is sectioned with specially designed blades.
- There may be pain in the right lower quadrant where the contents from the small intestine enter the large intestine (caecum ).
- Quadrant III Quadrant III gives a macroscopic, not microscopic view, in other words a ' bird's-eye-view ' .
- mural quadrant of 1725.
- Perform rotational movements and downward pressure over this quadrant while keeping the patella stabilized with the non-dominant index finger and thumb.
- Lost in the Delta Quadrant, the crew of the USS Voyager face the perils of the long journey back to Earth.
- This scene is made even more photogenic by a large steering quadrant.
- protractor quadrant.
- quadrant of the abdomen.
- Only play in more closely at using a quadrant.
- The shared bathroom is fully tiled and has quadrant shower, toilet, wash basin and heated towel rail.
- The vigorous depression will drift away northwards, leaving winds mostly coming from the northwest quadrant.
- This is situated in the northeast quadrant of the city close to the eastern section of the city wall.
- The component label is a 50 mm x 50 mm label which is affixed to the lower left quadrant of the base label.
- John's ulcer was generally shallow and covered in red granulation tissue but was deeper in the lower, outer quadrant.
- At present, the south east quadrant of the town is the least well served by public parking.
- quadrant detector.
- quadrant arms on tubular posts.
- quadrant signals were raised to indicate ' clear ' .
- quadrant pain.
- quadrant wall is now finished, with special ' psychedelic ' blue and red brickwork capping!
- quadrant point and ends at roughly 10 o ' clock.
- There is also Halley's 8 foot mural quadrant of 1725.
- The development of the south west quadrant of the village was completed in 1996 with the Alder Way area.
- A second educational position represented on the top right quadrant of Figure I, is discovery learning.
- The second part of this arc starts at the 12 o ' clock quadrant point and ends at roughly 10 o ' clock.
- The towpath side bottom quadrant wall is now finished, with special ' psychedelic ' blue and red brickwork capping!
- From here there is a regular bus service to the Quadrant Bus Station alongside the Theater.
- The Laurel vanity unit teamed with a quadrant shower enclosure and fabulous 4 jet shower panel.
- The motif is no longer diachronic; in Quadrant II time is frozen and the motif becomes vertical, going downwards.
- The primary way to reach wiz is to spend most of your time in the top, right-hand quadrant of the mortal graph.
- The upper end is passed over a guiding quadrant Q to a set of wheels or fixed quadrants I, 2, 3, ...
- Turning, therefore, to a globe, Asia, viewed as a whole, will be seen to have the form of a great isosceles spherical triangle, having its north-eastern apex at East Cape (Vostochnyi), in Bering Strait; its two equal sides, in length about a quadrant of the sphere, or 6500 m., extending on the west to the southern point of Arabia, and on the east to the extremity of the Malay peninsula; and the base between these points occupying about 60Ã‚° of a great circle, or 4 500 m., and being deeply indented by the Arabian Sea and the Bay of Bengal on either side of the Indian peninsula.
- Tartaglia claimed the invention of the gunner's quadrant.
- For this purpose the following apparatus should be provided: - (i) two small metal tea-trays and some clean dry tumblers, the latter preferably varnished with shellac varnish made with alcohol free from water; (2) two sheets of ebonite rather larger than the tea-trays; (3) a rod of sealing-wax or ebonite and a glass tube, also some pieces of silk and flannel; (4) a few small gilt pith balls suspended by dry silk threads; (5) a gold-leaf electroscope, and, if possible, a simple form of quadrant electrometer (see Electroscope and Electrometer); (6) some brass balls mounted on the ends of ebonite penholders, and a few tin canisters.
- In smooth-bore days the term mortar meant a piece of ordnance of a peculiar shape resting on a bed at a fixed angle of quadrant elevation of 45Ã‚°.
- Minor improvements in tangent sights certainly were made, notably an automatic clamp, but quadrant elevation was mainly used, and in the case of guns equipped with position-finders (see Range-Finder) the guns could be layed for direction by means, of a graduated arc on the emplacement and a pointer on the mounting.
- The arrangements for giving quadrant elevation consisted of an arc, called index plate (see fig.
- The gonio plate below is divided into 4 quadrants, and each quadrant into 10 spaces of 9Ã‚° each 11 11 numbered in hundreds from o 'o 900.
- A circular piece of this paper is folded twice upon itself so as to form a quadrant, one of the folds is pulled out, and the cone thus obtained is supported in a glass or porcelain funnel having an apical angle of 60Ã‚°.
- The instrument consists of a high-voltage continuous-current dynamo which creates a potential difference between the needle and the two quadrants of a quadrant electrometer (see Electrometer).
- of the needle and each quadrant, and, therefore, by the ratios of the P. D.
- Wilson, "The Kelvin Quadrant Electrometer as a Wattmeter," Proc. Roy.
- He then explains how he verified the canon, and so found that there were no essential errors in it, although there were a few inaccuracies near the beginning of the quadrant, and he proceeds, " Haec to obiter scire volui, ut quibus to methodis incesseris, quas non dubito et plurimas et ingeniosissimas tibi in promptu esse, eas publici juris fieri, mihi saltem (puto et caeteris) scires fore gratissimum; eoque percepto, tua promissa folio 57, in debitum cecidisse intelligeres."
- There are three fronts; the principal, towards College Green, is a colonnade of the Ionic order, with faÃ§ade and two projecting wings; it connects with the western portico by a colonnade of the same order, forming the quadrant of a circle.
- crooked for the purpose, causing them to revolve in a quadrant of a cylinder under the sill, known as the drum; and they can be readily lowered by cutting off the flow from the upper pool and putting the drum in communication with the lower pool, which connexions can be adjusted by see-saw sluice-gates, so as to put the upper paddles in any intermediate position between vertical and horizontal (fig.
- The conclusion to which the above observers came was that any quadrant electrometer made in any manner does not See Maxwell, Electricity and Magnetism (2nd ed., Oxford, 1881), vol.
- Let v l, v 2, v 3 be the instantaneous potentials of the two ends and middle of the circuit; let a quadrant electrometer be connected first with the quadrants to the two ends of the inductive circuit and the needle to the far end of the non-inductive circuit, and then secondly with the needle connected to one of the quadrants (see fig.
- THE OPERATION The conventional operation involves a 2 - 4 inch long cut in the right lower quadrant of the abdomen.
- John 's ulcer was generally shallow and covered in red granulation tissue but was deeper in the lower, outer quadrant.
- The figure above is a schematic description of the quadrant detector.
- The Up direction signals have upper quadrant arms on tubular posts.
- Clinical findings include fever, chill and right upper quadrant pain.
- The towpath side bottom quadrant wall is now finished, with special ' psychedelic ' blue and red brickwork capping !
- Upper Quadrant Signal A semaphore signal in which the arm was raised to indicate ' off ' or ' clear '.
- Look for a shower with a curved side quadrant base; these bases are square, but the sides are curved instead of sharp, which will help create more space.
- The first quadrant of the Time Management Matrix requires you to list all of your tasks and responsibilities that are both important and urgent.
- The second quadrant is for the items that are important but not urgent.
- The third quadrant is for tasks and responsibilities that are urgent but not important.
- The fourth quadrant is for the things that are neither important nor urgent.
- You should avoid the items that are listed in this quadrant as they can waste precious time.
- Make a commitment to spend most of your time on the tasks and responsibilities that you listed in the second quadrant, as this is where the bulk of the most significant things you need to accomplish will fall.
- By focusing most of your time on the items in quadrant two, far fewer items that didn't start out as emergencies will end up falling into quadrant one.
- Some of the issues that can appear in the first quadrant may be beyond your control, and may come up when you least expect them.
- Addressing responsibilities in the second quadrant in a timely manner allows you more time to deal with urgent matters that are unexpected whenever they arise.
- However, if you ignore or put off items that started out in quadrant two, they can quickly become urgent, creating emergencies that could easily have been avoided.
- Many of the items that fall into quadrant three are really things that can be put off or avoided altogether, though we often fool ourselves into thinking that they are important simply because they seem to have a sense of urgency.
- Create daily to-do lists or charts to help you focus your time, and prioritize the tasks by quadrant.
- If you find yourself being pulled away from something that's in your second quadrant, stop and ask yourself if it's really urgent and important.
- Each one has a different area of urgency, from "urgent and important" to "neither urgent nor important." Covey recommends spending the most time in quadrant two to be productive and use time most efficiently.
- Quadrant Two: These are things that are important, but not urgent.
- Quadrant Three: These are distractions or interruptions that need to be dealt with immediately, but are not that important.
- Quadrant Four: These are things that are neither urgent nor important, like time wasters.
- This can also help you realize which quadrant you're spending most of your energy.
- The object of Backgammon is to get all fifteen of your checkers off the board by moving them all into your inner quadrant and then removing them.
- You must always move your checkers towards your inner quadrant, never backwards, and you can't move to any point that has two or more of your opponent's checkers on it.
- On the next turn, that player must move the checker off the bar and onto the board starting at their opponent's inner quadrant.
- If a player rolls a 2 and a 3, for example, they must put the checker on the bar on either point 2 or 3 of their opponent's inner quadrant.
- Any number of checkers can get bumped onto the bar, which makes this a great strategy to keep the other player busy while you move all of your checkers to your inner quadrant.
- To win, you must get all of your checkers to your inner quadrant and then begin moving them off the board.
- Blockage of the appendix then causes inflammation, increased pressure, and restricted blood flow, leading to abdominal pain and tenderness in the right lower quadrant of the abdomen.
- GIA diamond graders use prescribed inspection procedures and check each quadrant of the stone for flaws.
- Apply a different color of dye to each "quadrant" of the shirt roll.
- Different colors of dye are then applied to each quadrant of the roll.
- It offers reliable travel from the Bajoran planet in the alpha quadrant to the unexplored gamma quadrant.
- The wide story arc in Deep Space Nine centers around the Bajorans, the wormhole, and the mysterious Founders of the gamma quadrant.
- Upon returning to the alpha quadrant, Sisko learns that the Bajorans worship the aliens inside the wormhole, calling them the ancient Prophets.
- Because Sisko is regularly contacted by these aliens, he is unwillingly given the title of Emissary, a religious figurehead position he uncomfortably accepts.As the seasons progress, more information about the gamma quadrant is learned.
- 420) of a change of form in the Greenwich mural quadrant led to the introduction of astronomical circles at the Royal Observatory, and to his own appointment as its head.
- quadrant of unsurpassed quality.
- The small area of lattice degeneration in the superior temporal quadrant OS remained free of retinal breaks.
- In the upper right hand quadrant of Virgo lies the center of the Virgo Cluster of galaxies.
- The mariner's astrolabe was superseded by John Hadley's quadrant of 1731.
- Prony (1755-1839) in the formation of the great French tables of logarithms of numbers, sines, and tangents, and natural sines, called the Tables du Cadastre, in which the quadrant was divided centesimally; these tables have never been published (see Logarithms).
- Upper quadrant signals were raised to indicate ' clear '.
- It's discovered that much of the gamma quadrant is under the control of the Founders, a race whose true identity is revealed later in the series.
- Because of the wormhole, the alpha quadrant is in danger of these fierce dictators.
- They find themselves in the Delta Quadrant on the far side of the galaxy, seventy-five years' travel from home.
- But the Voyager crew doesn't just make new friends in the Delta Quadrant, they also make new enemies.
- Star Trek: The Next Generation's fearsome enemy the Borg originate in the Delta Quadrant, so it should come as no surprise that Voyager also meets and tangles with these unstoppable bad guys.
- A yard scale of varnished paper, made out locally for quadrant elevation with regard to height of site, was usually pasted over this.
- The gonio plate below is divided into 4 quadrants, and each quadrant into 10 spaces of 9° each 11 11 numbered in hundreds from o 'o 900.
- raining dials placed on the mountings where they can be read by the layers, and more accurate elevation indicators have made laying by quadrant elevation, and in certain cases giving direction by means of graduated arc and pointer, both accurate and rapid, so that once more this system of laying is coming into favour for long ranges.
- A circular piece of this paper is folded twice upon itself so as to form a quadrant, one of the folds is pulled out, and the cone thus obtained is supported in a glass or porcelain funnel having an apical angle of 60°.
- The next great advance on the Trigonometria artificialis took place more than a century and a half afterwards, when Michael Taylor published in 1792 his seven-decimal table of log sines and tangents to every second of the quadrant; it was calculated by interpolation from the Trigonometria to 10 places and then contracted to 7.
- In the first quadrant there is no root after zero, since tan u> u, and in the second quadrant there is none because the signs of u and tan u are opposite.
- The pattern is that of a true sight, that is to say, the base plate is capable of movement about two axes, one parallel to and the other at right angles to the axis of the gun, and has cross spirit-levels and a graduated elevating drum and independent deflection scale, so that compensation for level of wheels can be given and quadrant elevation.
- An automatic sight is a sight connected in such a manner with the elevating gear of the gun, that when the sight is directed on the water-line of a target at any range the gun will ---- have the proper quadrant g B elevation for that range.
- The automatic sight has, however, distinct limitations; it depends for its accuracy on height of site, and at long ranges even from a high site it cannot compare for accuracy with independent range-finding and careful laying or accurately applied quadrant elevation; it is also useless when the water line of the target is obscured, as may often be the case from the splashes caused by bursting shell.
- There are methods of measuring electrical power by means of electrostatic voltmeters, or of quadrant electrometers adapted for the purpose, which when so employed may be called electrostatic wattmeters.
- The title of Gunter's book, which is very scarce, is Canon triangulorum, and it contains logarithmic sines and tangents for every minute of the quadrant to 7 places of decimals.
- The next publication was due to Vlacq, who appended to his logarithms of numbers in the Arithmetica logarithmica of 1628 a table giving log sines, tangents and secants for every minute of the quadrant to ro places; there were obtained by calculating the logarithms of the natural sines, &c. given in the Thesaurus mathematicus of Pitiscus (1613).
- Briggs appreciated clearly the advantages of a centesimal division of the quadrant, and by dividing the degree into hundredth parts instead of into minutes, made a step towards a reformation in this respect, and but for the appearance of Vlacq's work the decimal division of the degree might have become recognized.
- I „ Logarithms of the ratios of arcs to sines from 04 00000 to 0 4.05000, and log sines throughout the quadrant 4 „ Logarithms of the ratios of arcs to tangents from 0 4 00000 to 0 4.05000, and log tangents throughout the quadrant 4 The trigonometrical results are given for every hundred-thousandth of the quadrant (to" centesimal or 3" 24 sexagesimal).
- A vast improvement in this instrument was made by the invention of the quadrant electrometer by Lord Kelvin, which is the most sensitive form of electrometer yet devised.
- 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.
- This is called " quadrant elevation," and the proper inclination was given by means of the " gunner's quadrant," a quadrant and plumb bob, one leg being made long to rest in the bore, or by bringing lines scribed on the breech of the gun in line with a pointer on the carriage; these were called " quarter sights."
- In smooth-bore days the term mortar meant a piece of ordnance of a peculiar shape resting on a bed at a fixed angle of quadrant elevation of 45°.
- In coast defence artillery, owing to the fact that the guns are on fixed mountings at a constant height (except for rise and fall of tide) above the horizontal plane on which their targets move, and that consequently the angle of sight and quadrant elevation for every range can be calculated, developments in sights, in a measure, gave way to improved means of giving quadrant elevation.
- In the navy the conditions of an unstable platform rendered quadrant elevation of little use, and necessitated a special pattern of tangent sight to facilitate firing the moment the roll of the ship brought the sights on the target.
- He introduced several practical improvements, such as the measurement of time to tenths of a second; and he prevailed upon the government to replace Bird's mural quadrant by a repeating circle 6 ft.
- This value of is the tangent elevation (T.E); the quadrant elevation (Q.E.) is -S, where S is the angular depression of the line of sight and if 0 is h ft.
- In the same year Vlacq published at Gouda his Trigonometria artificialis, giving log sines and tangents to every ro seconds of the quadrant to ro places.
- As the Tables du Cadastre remained unpublished, other tables appeared in which the quadrant was divided centesimally, the most important of these being Hobert and Ideler's Nouvelles tables trigonometriques (1799), and Borda and Delambre's Tables trigonometriques decimates (1800-1801), both of which are seven-figure tables.
- 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.
- They found from observations that the particular quadrant electrometer they used might be made to follow one or other of three distinct laws.
- Guided by these experiments, Ayrton, Perry and Sumpner constructed an improved unifilar quadrant electrometer which was not only more sensitive than the White pattern, but fulfilled the theoretical law of working.
- The quadratrix of Tschirnhausen is constructed by dividing the arc and radius of a quadrant in the same number of equal parts as before.
- The hake moves laterally on a quadrant and it is thus possible to give the plough a tendency to left or right by moving the hake in the reverse direction.
- The lower quadrant of the casing is enlarged spirally, so as to leave a narrow rectangular opening at the bottom, through which the air is discharged into a chimney of gradually increasing section carried to a height of about 25 ft.
- This form of laying is of two kinds: (I) that in which the gun can be layed for direction over the sight on the target itself, or on some aiming point close by, but from Indirect indistinctness or other causes quadrant elevation is preferred; and (2) that used when the target is completely laying.
- Radii are drawn from the centre of the quadrant to the points of division of the arc, and these radii are intersected by the lines drawn parallel to BC and through the corresponding points on the radius AB.
- ABC is a quadrant in which the line AB and the arc AC are divided into the same number of equal parts.
- Proposition 30 describes the construction of a curve of double curvature called by Pappus the helix on a sphere; it is described by a point moving uniformly along the arc of a great circle, which itself turns about its diameter uniformly, the point describing a quadrant and the great circle a complete revolution in the same time.