 | John Henry Pepper - 1869 - 722 pages
...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... | |
 | John Tyndall - 1870 - 92 pages
...line np will be the sine of the angle of refraction. 117. Hence the all-important optical law — The sine, of the angle of incidence divided by the sine...law. Thus if the incidence be along the dotted line m! E, the refraction will be along the line E n', but the ratio of m' o1 to n' p' will be precisely... | |
 | John Tyndall - 1870 - 110 pages
...line np will be the sine of the angle of refraction. 117. Hence the all-important optical law — The sine of the angle of incidence divided by the sine...diminish or increase so as to obey this law. Thus it' the incidence be along the dotted line m' E, the refraction will be along the line E n', but the... | |
 | John Tyndall - 1871 - 408 pages
...line np will be the sine of the angle of refraction. 117. Hence the ill-important optical law — The sine of the angle of incidence divided by the sine...law. Thus if the incidence be along the dotted line m' E, the refraction will be along the line E n', but the ratio of m! o' to n' p' will be precisely... | |
 | John Tyndall - 1871 - 216 pages
...line np will be the sine of the angle of refraction. 117. Hence the ill- important optical law — The sine of the angle of incidence divided by the sine...one of them be lessened or augmented, the other must O " diminish or increase so as to obey this law. Thus if the incidence be along the dotted line m'... | |
 | Christopher Smith Fenner - 1875 - 360 pages
...the angle of incidence, while np will be the sine of the angle of refraction ; hence, the law. The sine of the angle of incidence, divided by the sine...of the angle of refraction, is a constant quantity, which quantity invariably determines the index of refraction. Rays passing backwards always retrace... | |
 | Joseph Zentmayer - 1876 - 23 pages
...o'm' by n'p', we will have in both cases the same quotient, or, as it is generally expressed : the sine of the angle of incidence divided by the sine of the angle of refraction is a constant, whatever the angle of incidence may be. This constant quotient is called the index of refraction. Different... | |
 | John Henry Pepper - 1877 - 764 pages
...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... | |
 | Alfonzo Gardiner - 1881 - 214 pages
...sine of the angle of incidence bean a fixed proportion to the sine of the angle of refraction; or the sine of the angle of incidence, divided by the sine of the angle of refraction, is (for the same two media) always a constant quantity (ie, the same number^, which is called the " Index... | |
 | Josiah Parsons Cooke (Jr.) - 1881 - 648 pages
...refraction, we readily deduce another value for the index of refraction ; and it is usually denned as the sine of the angle of incidence divided by the sine of the angle of refraction. Moreover, according to the well-known law of refraction, not only is this ratio constant for any incidence,... | |
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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. 
