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 22by David Brewster, Alexander Dallas Bache - 1833 - 95 pagesFull view - About this book
| Friedrich Wilhelm Julius Schenck, August Gürber - 1900 - 364 pages
...called the angle of incidence. The angle ft which .Va forms with / is called the angle of refraction. **The sine of the angle of incidence divided by the sine of the angle of refraction** is, for any given pair of media, constant, and is called the index of refraction. When the index of... | |
| Russell Sturgis - 1901 - 568 pages
...reflection, and refraction respectively. The angle of reflection is equal to the angle of incidence. **The sine of the angle of incidence divided by the sine of the angle of refraction** is a constant, independent of the angle of incidence, and of the pitch of the sound. All these angles... | |
| C. Welborne Piper - 1901 - 186 pages
...refracted portion of the ray with the normal bh, is the angle of refraction, and the sine of this angle **is equal to the sine of the angle of incidence divided by the** relative refractive index from air into glass ; or, to put the relationship of the angles in another... | |
| George Edmund De Schweinitz - 1902 - 828 pages
...formed by the ray with the perpendicular after refraction is called the angle of refraction — angle R. **The sine of the angle of incidence, divided by the sine of the angle of refraction,** gives the index of refraction. Glass used in the manufacture of spectacles has an index of refraction... | |
| 1892 - 334 pages
...refraction is somewhat as follows : the index of refraction of a substance is equal to the quotient of **the sine of the angle of incidence divided by the sine of the angle of refraction.** A simple figure will readily make this clear. Let ABCD (figure i) represent the outline of a circular... | |
| Edward E. Gibbons - 1904 - 498 pages
...refracting medium to the passage of light. In other words the index of refraction of a substance is **the sine of the angle of incidence divided by the sine of the angle of refraction.** The law is illustrated in the following way : Let M be a refracting medium ; abc a train of plane waves... | |
| Charles Riborg Mann, George Ransom Twiss - 1905 - 488 pages
...sin r, whence ac ac b_c smi = ac = be Therefore [cf tion (18)] n= £EJ (19) sin r ad ad sin r ac Thus **the index of refraction is -equal to the sine of the...incidence divided by the sine of the angle of refraction.** Since these angles are easily measured, this ratio is more convenient to use than that of the velocities.... | |
| Lynn Banks McMullen - 1906 - 474 pages
...(Fig. 206). The value of the critical angle may be found as follows: The index of refraction equals **the sine of the angle of incidence divided by the sine of the angle of refraction,** equals, in this case, the sine of the critical angle divided by the sine of 90° (which is unity).... | |
| Simon Henry Gage - 1908 - 376 pages
...the rarer medium and that taken by the ray in the denser medium. The relationship is expressed thus : **Sine of the angle of incidence divided by the sine of the angle of refraction** equals the indexofrefraction. In the figures, Sin CBN' of refraction. Worked out completelv in Fig.... | |
| Charles Francis Adams - 1909 - 204 pages
...in this equation, we have Z i = 1.D + £ A, or » = K-*> + .4)- (2) Since the index of refraction = **sine of the angle of incidence divided by the sine of the angle of refraction,** . sin . • Index ot retraction = sin ^ A The sines of these angles can be found in Table 13, Appendix,... | |
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