| Charles Herbert Clark - Microscopy - 1896 - 261 pages
...it has been found by experimental demonstration that, as long as the two media remain the same, the **ratio of the sine of the angle of incidence to the sine of the angle of** refraction This ratio -=T=- is called the Index of Refracis constant. PR tion. It is usually expressed... | |
| Nathaniel L. Macbride - Eye - 1897 - 310 pages
...remembered that Snell's law is only applicable to homogeneous substances. The number which expresses the **ratio of the sine of the angle of incidence to the...angle of refraction is called the Index of Refraction.** This is, in the case of air and glass, f, or, as it is most always expressed, 1.50. In the case of... | |
| Edward Leamington Nichols - Physics - 1897 - 452 pages
...The law of its change of direction follows a fixed law ; viz. : 343. THE LAW OP REFRACTION. — The **ratio of the sine of the angle of incidence to the sine of the angle of refraction is** constant. The law may be expressed thus, sin i = n. sinr The quantity n in the above equation is called... | |
| Joseph Sweetman Ames - Physics - 1897 - 513 pages
...refracted wave-fronts and to the plane surface all lie in one plane, viz. the plane of incidence. 2. The **ratio of the sine of the angle of incidence to the sine of the angle of refraction is** a constant for a given form of matter and waves of a definite wave-number; it is entirely independent... | |
| Jabez Hogg - Microscope and microscopy - 1898 - 704 pages
...light also of the same kind, then it is referred to as the law of sines. Indices of Refraction. The **ratio of the sine of the angle of incidence to the sine of the angle of** refraction, when a ray passes from one medinm to another is termed the relative index of refraction.... | |
| William Henry Chandler - Encyclopedias and dictionaries - 1898
...works devoted to special subjects are almost innumerable. IXDEX— INDIANS Index of Refraction. Rates **of the sine of the angle of incidence to the sine of the angle of** refraction. See REFRACTION. India. Country of s. Asia, a dependency of Great Britain. It consists mainly... | |
| William Watson - Physics - 1899 - 918 pages
...then in general there will be two refracted rays, but while one of them obeys Snell's law in that the **ratio of the sine of the angle of incidence to the sine of the angle of refraction is** constant, whatever the direction of the incident ray, for the other ray this ratio is different for... | |
| George Adelmer Rogers - Retinoscopy - 1899 - 213 pages
...potential foci of the neutral pencils are posterior to the retina. Index. — (i") Index of Refraction. The **ratio of the sine of the angle of incidence to the sine of the angle of** refraction (alb). (2) Index of Resistance. The ratio of the resistance of a medium to the resistance... | |
| Julius Hortvet - Physics - 1899 - 255 pages
...CF = CE' ED But pr> = the index of refraction. Hence the index of refraction is defined also as the **ratio of the sine of the angle of incidence to the sine of the angle of** refraction. The index of refraction is different for rays of different colors, increasing from the... | |
| George Arthur Hoadley - Physics - 1900 - 463 pages
...the angles of incidence and refraction respectively if we consider the radius BGr to be unity. The **ratio of the sine of the angle of incidence to the...angle of refraction is called the index of refraction.** In Fig. 429 the index of refraction is _ • FGr HK. 469. The Laws of Refraction. I. When a ray of... | |
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