 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.  A College Text-book of Physics - Page 574by Arthur Lalanne Kimball - 1911 - 692 pagesFull view - About this book
 | Charles Herbert Clark - 1907 - 294 pages
...increases, it has 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 is constant. This ratio - is called the Index of RefracPR tion. It is usually expressed decimally. If the ray is... | |
 | George Arthur Hoadley - 1908 - 474 pages
...the normal DE; then these lines are the sines of the angles of incidence and refraction respectively. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is called the index of refraction. In FQFig. 421 the index of refraction is -77- . This ratio is the ti... | |
 | Silas Ellsworth Coleman - 1908 - 284 pages
...figure), the angles of incidence and refraction will simply be interchanged. We shall then have as the ratio of the sine of the angle of incidence to the sine of the angle of refraction PJP{, P^/Pl, and /y/V for the three cases, respectively, and we have learned that these... | |
 | A. P. W. Williamson - 1909 - 410 pages
...and incidence are in the same plane, which plane contains the normal to the refracting surface. (2) The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant quantity for the same medium. Let m = the mean refraction in seconds r = the constant ratio... | |
 | Benjamin Warner Snow - 1909 - 810 pages
...light in air to the velocity of light in that medium, and this constant ratio is numerically equal to the ratio of the sine of the angle of incidence to the sine of the angle of refraction. As the angle of incidence is made to vary, the angle of refraction will also vary, but... | |
 | Robert Wallace Stewart - 1909 - 160 pages
...the normal at the point of incidence, and the refracted line of disturbance are in the same plane. The ratio of the sine of the angle of incidence to the sine of the angle of refraction for any two media is called the index of refraction for these two media, and is usually... | |
 | Robert Wallace Stewart - 1909 - 236 pages
...refraction. Also, — is the sine of -Nbn, and -T is the sine of NJc, so that the ratio of the sine of so the angle of incidence to the sine of the angle of refraction is 7*?i S'?i ?*W — ; : -T, or — , for rb is equal to sb. That is, the ratio of the rb sb sn lengths... | |
 | Marcus Benjamin, Arthur Elmore Bostwick, Gerald Van Casteel, George Jotham Hagar - 1910 - 546 pages
...refraction, the other end. The rays after refraction are no longer parallel, so that the index of refraction (the ratio of the sine of the angle of incidence to the sine of the angle of refraction) is different for each ray; and the difference of the indices for the extreme rays, at the two ends, is... | |
 | Charles Elijah Linebarger - 1910 - 492 pages
...i(sin z) and RB is the sine of the angle r(sin r). With the adoption of these terms Snell's law is : The ratio of the sine of the angle of incidence to the sine of the angle of refraction has a constant value, provided the media remain the same : sin i , .,. —r— = n (a constant).... | |
 | Silas Ellsworth Coleman - 1911 - 656 pages
...-=7r = -prF f^; = — Hence the law of refract1on: Whatever EF EF -r- EO s1ner the angle of incidence, 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. It can be shown that this ratio is equal to the ratio of the velocities of light... | |
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