 | Charles Kendall Adams - 1895 - 984 pages
...ray in a double refracting medium, see POLARIZATION. Index of Refraction. — The constant ratio of the sine of the angle of incidence to the sine of the angle of refraction when a ray of homogeneous light passes through the bounding surface between two media. Thus... | |
 | George Neil Stewart - 1895 - 842 pages
...media. For purposes of comparison, the refractive index of a substance is usually taken as the ratio of the sine of the angle of incidence to the sine of the angle of refraction of a ray passing from air into the substance. When a ray strikes a surface at right angles,... | |
 | S. P. Meads - 1896 - 298 pages
...Measure CE the sine of the angle of refraction. Divide DA by CE. The index of refraction is the ratio of the sine of the angle of incidence to the sine of the angle of refraction. This is constant for any two substances, whatever be the angle of incidence. The index... | |
 | Charles Herbert Clark - 1896 - 296 pages
...been found by experimental demonstration that, as long as the two media remain the same, the ratio of the sine of the angle of incidence to the sine of the angle of refraction This ratio -=T=- is called the Index of Refracis constant. PR tion. It is usually expressed... | |
 | Nathaniel L. Macbride - 1897 - 320 pages
...that Snell's law is only applicable to homogeneous substances. The number which expresses the ratio of the sine of the angle of incidence to the sine of the angle of refraction is called the Index of Refraction. This is, in the case of air and glass, f, or, as it is... | |
 | Edward Leamington Nichols - 1897 - 474 pages
...of its change of direction follows a fixed law ; viz. : 343. THE LAW OP REFRACTION. — The ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant. The law may be expressed thus, sin i = n. sinr The quantity n in the above... | |
 | Joseph Sweetman Ames - 1897 - 546 pages
...wave-fronts and to the plane surface all lie in one plane, viz. the plane of incidence. 2. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant for a given form of matter and waves of a definite wave-number; it is entirely... | |
 | Jabez Hogg - 1898 - 780 pages
...also of the same kind, then it is referred to as the law of sines. 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 medinm to another is termed the relative index of refraction.... | |
 | William Henry Chandler - 1898 - 600 pages
...devoted to special subjects are almost innumerable. IXDEX— INDIANS Index of Refraction. Rates of the sine of the angle of incidence to the sine of the angle of refraction. See REFRACTION. India. Country of s. Asia, a dependency of Great Britain. It consists mainly... | |
 | George Adelmer Rogers - 1899 - 240 pages
...the neutral pencils are posterior to the retina. Index. — (i") Index of Refraction. The ratio of the sine of the angle of incidence to the sine of the angle of refraction (alb). (2) Index of Resistance. The ratio of the resistance of a medium to the resistance... | |
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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. 
