| David Brewster - 1831 - 412 pages
...sine of the angle of incidence, so is unity to the index of refraction ; or the index of refraction is equal to the sine of the angle of incidence divided by the sine of the angle of refraction. (36.) By this method, which is very simple in practice, we may readily measure the refractive powers... | |
| Mary Somerville - 1834 - 390 pages
...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... | |
| Mary Somerville - 1834 - 484 pages
...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... | |
| David Brewster - 1841 - 432 pages
...sine of the angle of incidence, so is unity to the index of refraction ; or the index of refraction is equal to the sine of 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... | |
| Mary Somerville - 1849 - 568 pages
...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... | |
| Archibald Tucker Ritchie - 1850 - 648 pages
...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... | |
| William Phillips - 1852 - 732 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... | |
| Stephen Watson Fullom - 1858 - 334 pages
...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... | |
| Ireland commissioners of nat. educ - 1861 - 310 pages
...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... | |
| John Henry Pepper - 1869 - 722 pages
...sine of the angle of incidence, so is unity to the index of refraction ; or the index of refraction is equal to the sine of the angle of incidence divided by the sine of the angle of refraction. By this method we may readily measure the refractive power of all bodies. If the body be solid, it... | |
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