Newton was the first to construct a reflecting telescope.
The latter is rather to be regarded as the representative of the age in which he lived, and his interpretation is to be taken as reflecting the exegesis of that period.
He acted as he did when hunting, without reflecting or considering.
Special sights were introduced to overcome the difficulties of dis appearing guns, large guns firing through small ports, &c. Such were \ the Moncrieff reflecting sights, and the " chase sights " for the 10-in.
In length, rests a very light metallic bridge to which a mirror is attached, the mirror reflecting a ray of light from a lamp upon a screen.
An admissible error of phase of 4X will correspond to an error of IX in a reflecting and 2X in a (glass) refracting surface, the incidence in both cases being perpendicular.
This is the ordinary formula for a reflecting plane grating, and it shows that the spectra are formed in the usual directions.
The pyramidions were sheathed in bright metal, catching and reflecting the sun's rays as if they were thrones of the sunlight.
Hero also wrote Catoptrica (on reflecting surfaces), and it seems certain that we possess this in a Latin work, probably translated from the Greek by Wilhelm.
When the pledge, given by the Treaty of Amiens, to restore the Order of St John with a national Maltese "langue," could not be fulfilled, political leaders began demanding instead the re-establishment of the " Consiglio Popolare " of Norman times (without reflecting that it never had legislative power); but by degrees popular aspirations developed in favour of a free constitution on English lines.
I) is, however, inverted and Eye perverted, and it is not very bright owing to the poor reflecting power of unsilvered glass.
It may be applied to the open end of a reflecting telescope, either of the Newtonian or the Cassegrain construction."
Next comes a section (xiv., xv.) reflecting a somewhat later development concerning fixed services and ministry; the desire for a stated service, and the need of regular provision for it, is leading to a new order of things.
The fine castle of Birr, beside its historical interest, has gained celebrity on account of the reflecting telescope erected here (1828-1845) by William, third earl of Rosse.
§ 296) as a consequence of the irregularities of the reflecting surface.
Before 1868 Maxwell conducted the experiment by sending light from the illuminated cross-wires of an observing telescope forward through the object-glass, and through a train of prisms, and then reflecting it back along the same path; any influence of convection would conspire in altering both refractions, but yet no displacement of the image depending on the earth's motion was detected.
Reflecting telescope, mounted first at Canonbury, later at Cranford, Middlesex, and with its aid executed many drawings of the celestial bodies of singular beauty and fidelity..
From 1827 he devoted himself to the improvement of reflecting telescopes; in 1839 he mounted a telescope of 3 ft.
The first constructor of reflecting telescopes on a large scale, William Herschel, never published anything about his methods of casting and polishing specula, and he does not appear to have been very successful beyond specula of 18 in.
The faces of slates have usually a slightly silky lustre due to the abundance of minute scales of mica all lying parallel and reflecting light simultaneously from their pearly basal planes.
The kaleidophone, intended to present visibly the movements of a sonorous body, consisted of a vibrating wire or rod carrying a silvered bead reflecting a point of light, the motions of which, by persistence of the successive images on the retina, were thus represented in curves of light.
His name is best known for the improvements he effected in the mirrors of reflecting telescopes and especially in the construction of the microscope.
Dogmatik (1810), and his Judas Ischarioth (2 vols., 1816, 2nd ed., 1818), were all written in the spirit of Schelling, the last of them reflecting a change in Schelling himself from theosophy to positive philosophy.
For some years before 1860 Ruskin had been deeply stirred by reflecting on the condition of all industrial work and the evils of modern society.
We might define temperature in the case of a flame or vacuum tube by the temperature which a small totally reflecting body would tend to take up if placed at the spot, but this definition would fail in the case of a spark discharge.
In Browning's form the setting is automatic. The dispersion may be further increased by causing the rays to pass more than once through the prism or prisms. Thus, by means of a system of reflecting prisms, Hilger passed the dispersed rays six times through one prism, and, by similar means, Browning passed the rays first through the upper part of a train and then back through the lower part.
It is curious that Avenarius should have brought forward this artificial hypothesis as the natural view of the world, without reflecting that on the one hand the majority of mankind believes that the environment (R) exists, has existed, and will exist, without being a counterpart of any living being as central part (C); and that on the other hand it is so far from being natural to man to believe that sensation and thought (E) are different from, and merely dependent on, his body (C), that throughout the Homeric poems, though soul is required for other purposes, all thinking as well as sensation is regarded as a purely bodily operation.
For this reason the end of the magnet is sometimes polished and acts as the mirror, in which case no displacement of the reflecting surface with reference to the magnet is possible.
Be this as it may, the epistle is of great historical importance, as reflecting a crisis inevitable in the development of the JewishChristian consciousness,when a definite choice between the old and the new form of Israel's religion had to be made, both for internal and external reasons.
The use of reflecting mirrors for the purpose of observing from cover is no novelty, and during the trench warfare of the Crimean War 1854-5 a device was patented which scarcely differs from the simple mirror periscope of the World War.
Less conspicuous periscopes were therefore designed, and these, in order to take in enough of the foreground, had to be provided with a magnifying as well as a reflecting system.
It follows, therefore, that the thought alone feels personal identity, when, reflecting on the train of past perceptions that compose a mind, the ideas of them are felt to be connected together and naturally introduce each other.
With regard to the testimony of Acts, the only question, since Harnack admits the Lucan authorship,' is whether Luke is describing the organization of the Church as it existed at the time of the events recorded or reflecting the arrangements which prevailed at the time when the book was written.
His researches in hydrodynamics were highly useful for marine engineering, while the reflecting and repeating circles, as improved by him, were of great service in nautical astronomy.
It is not to be supposed that the king of Hungary assented to this programme without reflecting that what he sought to further in Hungary, it would be impossible for him, as emperor of Austria, to oppose in Cisleithania.
That in it first and in it alone this condition is realized - the individual soul must be held to be an ultimate reality reflecting in its inmost nature, like the monad of Leibniz, the complete fulness and harmony of the whole.
Many other forms of heliostats have been designed, the chief difference consisting in the mechanical devices for maintaining the constant direction of the reflecting ray.
It had been inaugurated with Gotz von Berlichingen, and a few months later this tragedy was followed by another, Clavigo, hardly less convincing in its character-drawing, and reflecting even more faithfully than the former the experiences Goethe had gone through in Strassburg.
Foucault invented in 1857 the polarizer which bears his name, and in the succeeding year devised a method of giving to the speculum of reflecting telescopes the form of a spheroid or a paraboloid of revolution.
He was well aware of the failures of all attempts to perfect telescopes by employing lenses of various forms of curvature, and accordingly proposed the form of reflecting telescope which bears his name.
But, having ascertained by experiment that for all colours of light the angle of incidence is equal to the angle of reflexion, he turned his attention to the construction of reflecting telescopes.
A third form of reflecting telescope was devised in 1672 by Cassegrain (Journal des Scavans, 1672).
No further practical advance appears to have been made in the design or construction of the instrument till the year 1723, when John Hadley (best known as the inventor of the sextant) presented to the Royal Society a reflecting telescope of the Newtonian construction, with a metallic speculum of 6-in.
I was not then at an age for reflecting on social grievances.
There must be something capable of reflecting light in the wider sense of that term.
The solution of the question hinges upon the interpretation of the canons, that is, upon whether they are to be taken as reflecting a recent, or as pointing to an imminent, persecution.
It but remains to call attention to the fact that the earlier view of the liver as the seat of the soul gave way among many ancient nations to the theory which, reflecting the growth of anatomical knowledge, assigned that function to the heart, while, with the further change which led to placing the seat of soul-life in the brain, an attempt was made to partition the various functions of manifestations of personality among the three organs, brain, heart and liver, the intellectual activity being assigned to the first-named; the higher emotions, as love and courage, to the second; while the liver, once the master of the entire domain of soul-life as understood in antiquity, was degraded to serve as the seat of the lower emotions, such as jealousy, anger and the like.
A totally reflecting prism placed inside the glass cylinder projects the light which penetrates the film upon a selenium cell situated at the end of the cylinder.
A third reflecting plate is sometimes employed, the cross-section of the three forming an equilateral triangle.
He might soothe himself by reflecting that the basis for the Crusade, which he had hoped to find in Alexius III., was still more securely offered by Baldwin; he could not but feel with pride that he had become "as it were pope and apostolicus of a second world."
These small waves raised by the evening wind are as remote from storm as the smooth reflecting surface.
"They are all alike!" he said to himself, reflecting that he was not the only man unfortunate enough to be tied to a bad woman.
When he had finished that business it was already too late to go anywhere but still too early to go to bed, and for a long time he paced up and down the room, reflecting on his life, a thing he rarely did.
The surface of the pond was as smooth as glass, reflecting a small fluffy cloud as it floated across the inky sky.
They were mostly quiet on the ride home, both reflecting on how easy it was to be together, and Jackson enjoyed watching her drive.
Jackson ran his fingers through her hair, reflecting on the day and the new challenge they faced with her pack.
Those eyes were warm, reflecting a mood somewhere between sober and light humor.
The first sign of the ground Dean spotted was a rain puddle reflecting the glow from the lights of the plane as the wheels touched the runway—one, two, three times before the tired aircraft glided to the taxiway.
Alex turned to her, his eyes reflecting humor, a smile playing at the corners of his mouth.
The great reflecting telescope at Dorpat was manufactured by him, and so great was the skill he attained in the making of lenses for achromatic telescopes that, in a letter to Sir David Brewster, he expressed his willingness to furnish an achromatic glass of 18 in.
They were followed by treatises of a different character, clearer in matter, more systematic in arrangement, and reflecting the methods of the scholastic logic; these are farther from the Greek tradition, for although they contain sufficient traces of their ultimate Greek ancestry, their authors do not know the Greeks as masters and cite no Greek names.
From Data on Star Trek and C-3PO in Star Wars to Twiggy in Buck Rogers, robots are wise-cracking sidekicks and sage philosophers reflecting on "the human condition."
Damian waved her in without looking at her, his eyes reflecting the fire.
She forced herself to continue to the apartment's entrance and flung open the door, revealing a hall with auxiliary lighting reflecting off a white marble floor.
Such an idea is justly stigmatized by Mommsen as ridiculous, and reflecting a discredit as unfounded as it is unjust on the imperial police of the capital.
In such transparent and seemingly bottomless water, reflecting the clouds, I seemed to be floating through the air as in a balloon, and their swimming impressed me as a kind of flight or hovering, as if they were a compact flock of birds passing just beneath my level on the right or left, their fins, like sails, set all around them.
Ashley's bead was lighter red in color, its surface glazed to give it a subtle reflecting quality.
He described the reflecting goniometer in 1809 and the camera lucida in 1812, provided microscopists with the "Wollaston doublet," and applied concavo-convex lenses to the purposes of the oculist.
She snatched her bag and hurried home, not reflecting on her behavior until she tossed her coat on the bed.
The dying flicker danced and radiated in his shaking hand, reflecting on something white.