 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.  An Elementary Text-book of Physics: Light - Page 128by Robert Wallace Stewart - 1909Full view - About this book
 | Stephen Parkinson - Optics - 1859 - 336 pages
...different refracting angles, he ascertained that for a ray corresponding to any one of the fixed lines, the ratio of the sine of the angle of incidence to the sine of the angle of refraction was invariable,— thus affording the strongest corroboration of the law of refraction (Art.... | |
 | Désiré van Monckhoven - Photographic lenses - 1867 - 296 pages
...incident ray, the refracted ray, and the normal, are all in the same plane. 2nd. For the same two media, the ratio of the sine of the angle of incidence to...sine of the angle of refraction is constant, whatever may be the angle of incidence. This law has received the name of " the Law of Descartes." Let us give... | |
 | Richard Wormell - 1871 - 288 pages
...perpendicular to oc, then whatever the angle of incidence may be, the ratio — remains the same. BT The ratio of the sine of the angle of incidence to the sine of the angle of refraction is termed the refractive index for the given media. 37. Having given the direction of the incident ray... | |
 | Augustin Privat-Deschanel - Physics - 1873 - 300 pages
...the course 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... | |
 | a. privat deschanel - 1873 - 1076 pages
...the course 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... | |
 | British Association for the Advancement of Science - Science - 1873 - 900 pages
...Prof. Purser, on the moment, made out an analytical investigation which depended on the proportionality of the sine of the angle of incidence to the sine of the angle of refraction holding good for infinitely thin laminfe differing infinitely little in density, and holding... | |
 | British Association for the Advancement of Science - Science - 1873 - 902 pages
...Prof. Purser, on the moment, made out nn analytical investigation which depended on the proportionality of the sine of the angle of incidence to the sine of the. angle of refraction holding good for infiuitely thin laminie differing infinitely little in density, und holding... | |
 | John Minot Rice, William Woolsey Johnson - Differential calculus - 1875 - 102 pages
...of a ray of light is that which occupies the least time is consistent with the observed fact, that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant, provided we suppose the velocities to increase with the densities. This last supposition is consistent... | |
 | Edward Brooks - Arithmetic - 1876 - 584 pages
...the weight of an equal volume of some other body assumed as a standard. The index of refraction is the ratio of the sine of the angle of incidence to the sine of the angle of refraction. The differential co-efficient is the ratio of the increment of the function to that of... | |
 | Isaac Todhunter - Physics - 1877 - 450 pages
...the law is called for brevity the law of sines. 229. The number which expresses the fixed proportion of the sine of the angle of incidence to the sine of the angle of refraction is different in different media. 4 For water it is about -; so that the sine of the angle ION o 4 is -... | |
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