 | William Barlow (of Muswell Hill.) - 1885 - 422 pages
...since the ratio of the velocity in the incident waves to the velocity in the refracted waves is that of the sine of the angle of incidence to the sine of the angle of refraction, y\ TJ« and jj-jj = sine of the angle of incidence, f1 H and jTy- = sine of the angle of... | |
 | Alexander Macfarlane - Mathematics - 1885 - 414 pages
...medium B, it is bent out of its former straight course in such a manner that the ratio of the sino of the angle of incidence to the sine of the angle of refraction is constant. This physical ratio is expressed by p. L parallel per L along in A — L parallel... | |
 | Richard Dennis Hoblyn - Medicine - 1887 - 848 pages
...The fore-finger ; the finger usually employed in pointing at any object. INDEX OF REFRACTION. This is the ratio of the sine of the angle of incidence to the sine of the angle of refraction when a ray of light passes from a vacuum into any medium. INDIA-RUBBER, VULCANIZED. Caoutchouc... | |
 | Engineering - 1891 - 592 pages
...direction of its course is altered, and that this change of direction varies with different media, but that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is always the same for the same medium, whatever may be, within a certain limit, the obliquity... | |
 | Edwin Herbert Hall - Physics - 1891 - 428 pages
...sine of r, the angle of refraction. The general law of refraction may, then, be stated as follows : The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant quantity, for any two given adjoining media, and is called the Index of Refraction... | |
 | Edwin Herbert Hall - Physics - 1891 - 420 pages
...sine of r, the angle of refraction. The general law of refraction may, then, be stated as follows : The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant quantity, for any two given adjoining media, and is called the Index of Refraction... | |
 | Howard Forde Hansell, James H. Bell - Eye - 1892 - 268 pages
...rays of light which pass through it, away from the direction pursued by them before entering it, or the ratio of the sine of the angle of incidence to the sine of the angle of refraction. The index of refraction of air is taken as I, that of water, as 1.336 (sin. : i. : sin.... | |
 | Henry Smith Carhart, Horatio Nelson Chute - Physics - 1892 - 400 pages
...in a reverse direction it is bent from the normal. II. Whatever the obliquity of the incident ray, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant for the same two media. III. The planes of the angles of incidence and refraction... | |
 | Howard Forde Hansell - 1892 - 284 pages
...rays of light which pass through it, away from the direction pursued by them before entering it, or the ratio of the sine of the angle of incidence to the sine of the angle of refraction. The index of refraction of air is taken as I, that of water, as 1.336 (sin. : i. : sin.... | |
 | Alfred Barnard Basset - Physical optics - 1892 - 450 pages
...modification in the constitution of the refracted light. 89. The index of refraction of the ordinary ray is the ratio of the sine of the angle of incidence to the angle of refraction, which as we have already seen is constant for all angles. The extraordinary index... | |
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When a ray of light passes from one medium to another, it is refracted so that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the velocities in the two media. 
