 | John Rowning - Astronomy - 1744 - 470 pages
...CMEare fimilar ; that is, the focal Diftance of the Ray CE is to the Diftance of the Radiant Point, as the Sine of the Angle of Incidence is to that of the Angle of Refraftion. QE.D. Obf. i. Whereas the Ratio of IE to ME, or 'which is the fame Ibsng,... | |
 | John Ewing - Astronomy - 1809 - 672 pages
...thus be demonstrated. It was before observed, that when the refraction is made out of glass into air, the sine of the angle of incidence is to that of refraction as 2 : 3. Now let C* be the center of convexity or concavity of the lens, and CF the axis of the lens,... | |
 | William Nicholson - Natural history - 1809 - 684 pages
...as 4 to 3, and to that of deviation, as 4 to 4 — 3, or 1 ; and in passing oat of water into air, the sine of the angle of incidence is to that of refraction, as 3 to 4, and to that of deviation, as 3 to 1. Hence a ray of light cannot pass out of water into... | |
 | William Enfield - Astronomy - 1811 - 476 pages
...4.) as HI to CM ; that is, the focal distance of the ray CE is to the distance of the radiant point, as the sine of the angle of incidence is to that of the angle of refraction.* -^S. Case 2. Of direrging rays proceeding out of a denser into a rarer medium.... | |
 | Thomas Leybourn - Mathematics - 1817 - 456 pages
...angle of incidence, its nat. sine = •9999224 ; but when a ray of light passes out ol air into water, the sine of the angle of incidence is to that of refraction as 4 to 3 ; hence 4:3:: -9999224 : -7499418 = sine of 48° 35' 7" = the angle of refraction, or the... | |
 | William Nicholson - Natural history - 1821 - 406 pages
...as 4 to 3, and to that of deviation, as 4 to 4 — 3, or 1 ; and in passing out of water into air, the sine of the angle of incidence is to that of refraction, as 3 to 4, and to that of deviation, as 3 to 1. Hence a ray of light cannot pass out of water into... | |
 | James Mitchell - Mathematics - 1823 - 666 pages
...as 4> to 3, and to that of deviation, us 4 to 4 — 3, or 1 ; and in passing out of water into air, the sine of the angle of incidence is to that of refraction, as 3 to 4, and to that of deviation as 3 to 1. Hence a ray of light cannot pass ont of water into air... | |
 | Denison Olmsted - Physics - 1832 - 378 pages
...necessary to premise, that when angles are small their ratio is nearly that of their sines ; and since the sine of the angle of incidence is to that of refraction as the index of refraction to unity (Art. 882.) therefore, n being the index of refraction, (see Fig.... | |
 | Denison Olmsted - Physics - 1835 - 374 pages
...hard wood, first formed into a triangular prism, and then dug out so as to admit the plates. since the sine of the angle of incidence is to that of refraction as the index of refraction to unity (Art. 906.) therefore, n being the index of refraction, (See Fig.... | |
 | Thomas Young - Science - 1845 - 230 pages
...either touching the refractive surface at A, or being itself a section of the refracting substance, if another circle DEF be drawn on the same centre,...of the first as the sine of the angle of incidence to that of refraction, and a third circle GHI, which is less than the first in the same proportion... | |
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In passing out of air into water, the sine of the angle of incidence is to that of refraction, as 4 to 3... 
