 | Robert Alexander Houstoun - 1915 - 516 pages
...ordinary wave in the crystal. Similarly, if a normal is drawn through C to the extraordinary wave-front, the sine of the angle of incidence is to the sine of the angle of refraction of this normal as the velocity in air is to the wave velocity in the crystal. But the ratio... | |
 | Frederick Shenstone Woods, Frederick Harold Bailey - 1917 - 542 pages
...normal at ะก and is called the angle of refraction. Hence the time of propagation is a minimum when the sine of the angle of incidence is to the sine of the angle of refraction as the velocity of the light in the first medium is to the velocity in the second medium. This is, in... | |
 | Francis Bacon - 1996 - 464 pages
...According to the common use of language, it is a fact and not a theory that in ordinary refraction the sine of the angle of incidence is to the sine of the angle of refraction in a given ratio. But the observations on which this statement is based, and the statement... | |
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This amounts to the same with saying, that, in the case before us, the sine of the angle of incidence is to the sine of the angle of refraction in a given ratio. 
