| Harvey Goodwin - Mathematics - 1849 - 528 pages
...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... | |
| Charles William Hackley - Trigonometry - 1851 - 372 pages
...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... | |
| Dionysius Lardner - Astronomy - 1851
...refracted ray through glass. If the semi-cylinder AM u, 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 N4 _ R'P'~3' i" N" 4 R"P" 3' and so on. Thus each... | |
| James R. Christie - Astronomical instruments - 1853 - 118 pages
...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
...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... | |
| Dionysius Lardner - Optics - 1856 - 432 pages
...refraction is always the same. 94. 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 f or I '5, and in the case of air and water is... | |
| Frank Grant Johnson - Physics - 1856 - 60 pages
...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 - Optics - 1858 - 279 pages
...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... | |
| Stephen Parkinson - Optics - 1859 - 311 pages
...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.... | |
| William Holms Chambers Bartlett - Optics - 1859
...the ratio of the velocity of the incident to that of the deviated light, which is equal to the ratio **of the sine of the angle of incidence to the sine of the angle of** refraction or of reflexion, according as m is positive or minus unity. The numerical value of m, has... | |
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