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" It may also be defined as the sine of the angle of incidence divided by the sine of the angle of refraction, as light passes from air into the substance. "
A Treatise on Optics - Page 22
by David Brewster, Alexander Dallas Bache - 1833 - 95 pages
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The Connection of the Physical Sciences

Mary Somerville - 1834 - 390 pages
...elegant law, discovered by Sir David Brewster, ' That the tangent of the polarizing angle for any medium is equal to the sine of the angle of incidence divided by the sine of the angle of refraction of that medium.' Whence also the refractive power even of an opaque body is known when its polarizing...
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On the Connexion of the Physical Sciences

Mary Somerville - 1834 - 658 pages
...elegant law, discovered by Sir David Brewster, ' That the tangent of the polarizing angle for any medium is equal to the sine of the angle of incidence divided by the sine of the angle of refraction of that medium.' Whence also the refractive power even of an opaque body is known when its polarizing...
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A Treatise on Optics

David Brewster - 1841 - 432 pages
...may be shown by the similarity of triangles, or proved by projection, that the angle of refraction 6 R n at the first surface is equal to BAF, half the...angle of incidence divided by the sine of the angle of retraction. (36.) By this method, which is very simple in practice, \ve may readily measure the refractive...
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On the Connexion of the Physical Sciences

Mary Somerville - 1849 - 570 pages
...elegant law. discovered by Sir David firewater, "That the tangent of the polarizing angle for any medium is equal to the sine of the angle of incidence divided by the sine of the angle of refraction of that medium." Whence also the refractive power even of an opaque body is known when its polarizing...
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The Dynamical Theory of the Formation of the Earth, Volume 2

Archibald Tucker Ritchie - 1850 - 648 pages
...elegant law, discovered by Sir David Brewster : ' that the tangent of the polarizing angle for any medium is equal to the sine of the angle of incidence, divided by the sine of the angle of refraction of that medium ;' whence also the refractive power even of an opaque body is known, when its polarizing...
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An Elementary Introduction to Mineralogy

William Phillips - 1852 - 700 pages
...ratio depending only on the medium into which the refraction takes place, and the nature of the light. The sine of the angle of incidence divided by the sine of the angle of refraction is denoted by the quantity /*. This quantity is called the refractive index of the medium. 241. In...
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The human mind, a discourse on its acquirements and history, Volume 2

Stephen Watson Fullom - 1858
...Brewster, and laid down in the simple law — that the tangent of the polarizing angle for any medium is equal to the sine of the angle of incidence divided by the sine of the angle of refraction of that meridian. The subject of polarization has largely occupied the scientific world, and the interesting...
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Mechanics, hydrostatics, pneumatics, optics

Ireland commissioners of nat. educ - 1861
...refraction is tangent to the angle of polarization :" and "the tangent of the angle of polarization is equal to the sine of the angle of incidence, divided by the sine of the angle of refraction corresponding to the given medium." This enables us to ascertain the angle of refraction, belonging...
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A Manual of Spherical and Practical Astronomy: Spherical astronomy

William Chauvenet - 1863 - 778 pages
...is called the index of refraction for that medium. This index is always an improper fraction, being equal to the sine of the angle of incidence divided by the sine of the angle of refraction. 4th. When the ray passes from one medium into another, the sines of the angles of incidence and refraction...
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A Manual of Spherical and Pratical Astronomy: Embracing the ..., Volume 1

William Chauvenet - 1864
...is called the index of refraction for that medium. This index is always an improper fraction, being equal to the sine of the angle of incidence divided by the sine of the angle of refraction. 4th. When the ray passes from one medium into another, the sines of the angles of incidence and refraction...
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