 | Augustin Privat-Deschanel - Physics - 1881 - 318 pages
...of a returning ray is the same as that of a direct ray. 724. Indices of Refraction. — The ratio of the sine of the angle of incidence to the sine of the angle of refraction, when a ray passes from one medium into another, is called the relative index of refraction... | |
 | Conwy Lloyd Morgan - Water - 1882 - 238 pages
...this perpendicular. 1541. In water at whatever oblique angle the ray strikes the surface, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is 1.336. In other substances the ratio is different. 1542. If instead of passing from the... | |
 | Hermann Wilhelm Vogel - Photochemistry - 1883 - 352 pages
...mathematicians call the sines of the angles. Thus ad is the sine of i, and bf the sine of r. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant. This ratio is, when light leaves air for water, 4 to 3 ; that is, the sine... | |
 | Henry Kiddle - Physics - 1883 - 296 pages
...greater or less than the former, according to the relative density of the refracting medinm. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is called the index of refrnction.\ It varies with the medinm, * " To account for refraction,... | |
 | Alexander Macfarlane - Mathematics - 1885 - 412 pages
...into another medium B, it is bent out of its former straight course in such a manner that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant. This physical ratio is expressed by /t L parallel per L along in A — L parallel... | |
 | Alfred Payson Gage - 1885 - 522 pages
...plane ; if from a denser into a rarer medium, it is refracted from the perpendicular. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is called the index of refraction, and is the same as the ratio of the velocity of the incident... | |
 | 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 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... | |
 | Edwin Herbert Hall - Physics - 1891 - 420 pages
...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... | |
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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. 
