 | Royal Society (Great Britain) - 1832 - 550 páginas
...elementary, yet lead to results of a less obvious nature. They are as follows; — -1. In all refractions the ratio of the sine of the angle of incidence to the sine of the angle of refraction, is constant. 2. If between two refracting mediums a third medium, terminated by parallel... | |
 | John M. Moffat - 1834 - 530 páginas
...proportion between the sines of those angles. HN is called the sine of the angle of incidence, and CR the sine of the angle of refraction. When a ray passes from air into glass, the sine of its angle of incidence will be to that of the angle of refraction, in the... | |
 | Harvey Goodwin - 1849 - 588 páginas
...surface, the distance of the geometrical focus from the surface is to its distance from the centre, as the sine of the angle of incidence to the sine of the angle of refraction. There will be four different cases, 1. A concave surface; the rays passing from a rarer... | |
 | Dionysius Lardner - 1851 - 804 páginas
...incidence and refraction is always the same. 980. Index of refraction. — The number which thus expresses the ratio of the sine of the angle of incidence to the sine of the angle of refraction, and which in the case of air and glass is j} or 1-5, and in the case of air and water is... | |
 | Charles William Hackley - 1851 - 524 páginas
...objects in the zenith enter the atmosphere perpendicularly) in accordance with the optical law that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant. At the end of the volume we have given a table of refractions containing the... | |
 | James R. Christie - 1853 - 140 páginas
...and the effect is known by the term " refraction." The angle MBL is the " angle of refraction," and the ratio of the sine of the angle of incidence to the sine of the angle of refraction is found to be constantly the same for the same substance, when the medium through which... | |
 | Joseph Allen Galbraith - 1854 - 90 páginas
...are so related to each other, that their sines are in a constant ratio. DEFINITION. — The constant ratio of the sine of the angle of incidence to the sine of the angle of refraction is called the index of refraction. Every different transparent body in nature has its own... | |
 | Frank Grant Johnson - 1856 - 98 páginas
...piece of money, to llustrate refraction of light. FIG. 18. Illustrates the law of refraction, that the ratio of the sine of the angle of incidence to the sine of the anglo of refraction, is constant. FIG. 19. (On the left.) Shows a ray of light refracted by a triangular... | |
 | Dionysius Lardner - 1858 - 308 páginas
...air, and the refracted ray through glass. If the semi-cylinder AMB, instead of glass, be water, then the ratio of the sine of the angle of incidence to the sine of the angle of refraction will be 4 to 3, so that we shall have I N_4 RP~3' !'# 4 R'p'~3' i" N" _ 4 R"P"~3' and so... | |
 | Stephen Parkinson - 1859 - 336 páginas
...different refracting angles, he ascertained that for a ray corresponding to any one of the fixed lines, the ratio of the sine of the angle of incidence to the sine of the angle of refraction was invariable,— thus affording the strongest corroboration of the law of refraction (Art.... | |
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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. 
