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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. "
Manual of optics, by J.A. Galbraith and S. Haughton - Page 18
by Joseph Allen Galbraith - 1854
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Notes on Physics

Benjamin Warner Snow - Physics - 1909 - 808 pages
...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...
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An Elementary Text-book of Physics: Light

Robert Wallace Stewart - Light - 1909
...Wlien light is refracted from one medium into another, then, for any two given media, the ratio of thf sine of the angle of incidence to the sine of the angle of refraction is constant for all values of these angles. This relation between the angles of incidence and refraction...
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Appleton's New Practical Cyclopedia: A New Work of Reference Based ..., Volume 2

Marcus Benjamin, Arthur Elmore Bostwick, Gerald Van Casteel, George Jotham Hagar - Encyclopedias - 1910
...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...
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Text-book of Physics

Charles Elijah Linebarger - Physics - 1910 - 471 pages
...i(sin1) and RB is the sine of the angle r(sinr). 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 , .^ This constant ratio...
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The Great Physicists from Galileo to Einstein

George Gamow - Science - 1988 - 338 pages
...results of his experiment on refraction of light with his table of sines, he would have found that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constam for any given pair of substances. He did not, 116 ° 1.014557 117Vi° 1.023522 119 « 1.032344...
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Dictionary of Composite Materials Technology

Stuart M. Lee - Technology & Engineering - 1995 - 160 pages
...velocity of light in a vacuum to its velocity in a transparent specimen. It is expressed as the ratio to the sine of the angle of incidence to the sine of the angle of refraction. Refractivity The index of refraction minus 1. Specific refractivity is given by n — \ld...
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Science and Its Fabrication

Alan Francis Chalmers - Science - 1990 - 142 pages
...The law in question is the assertion that, when a ray of light passes from one medium to another, the ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant characteristic of the pair of media. The law was discovered experimentally by Harriott,...
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Before Newton: The Life and Times of Isaac Barrow

Mordechai Feingold, Professor of History Mordechai Feingold - Biography & Autobiography - 1990 - 380 pages
...refracting medium (I:11). (5) The angle of incidence always equals the angle of reflection (11:2). (6) The ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant for any pair of media (I1:4). Barrow briefly justifies these hypotheses by appeal to simple...
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Toward a Formal Science of Economics: The Axiomatic Method in Economics and ...

Bernt P. Stigum - Business & Economics - 1990 - 1033 pages
...Another example is Snell's Law: "A ray of light, incident at a surface separating two media, is bent. The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant for two given media." As stated, the law is a theorem in the theory of optics that can be...
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Elementary Optics and Application to Fire Control Instruments

Optical instruments - 1977
...first medium is a vacuum is called the absolute index of the second medium. The relative index is the ratio of the sine of the angle of incidence to the sine of the angle of refraction, or the speed of light in the first medium to the speed of light in the second medium. If...
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