| Isaac Todhunter - Physics - 1877
...the law is called for brevity the law of sines. 229. The number which expresses the fixed proportion **of the sine of the angle of incidence to the sine of the angle of refraction is** different in different media. 4 For water it is about -; so that the sine of the angle ION o 4 is -... | |
| Joseph David Everett - Physics - 1878 - 314 pages
...case of water and air is \. The general law of refraction may be stated in the following words : the **ratio of the sine of the angle of incidence to the sine of the angle of refraction is** constant when the two media are given, and is called the index of refraction from the first medium... | |
| George Fownes - Chemistry - 1878 - 1003 pages
...has been explained that the' index of refraction of any transparent substance, that is to say, the **ratio of the sine of the angle of incidence to the sine of the angle of refraction, is** a constant quantity, so long as the density of the substance remains constant: — Bin i _ n sin г... | |
| Robert Ellis Dudgeon - Eye - 1878 - 92 pages
...the angle of refraction as the index of refraction of the lens is to i. Thus if the lens be of water, **the sine of the angle of incidence to the sine of the angle of** refraction will be as i • 3 to i ; if of glass, as i • 5 to i ; if of diamond, as 2 -4 to I, and... | |
| Elroy McKendree Avery - Physics - 1878 - 317 pages
...of the angle of refraction. The quotient arising from dividing the sine of the angle of incidence by **the sine of the angle of refraction is called the index of refraction** for the two media. It is evident that the greater the refractive power of the substance, the less the... | |
| Augustin Privat-Deschanel - Physics - 1881
...course of a returning ray is the same as that of a direct ray. 724. 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 medium into another, is called the relative index of refraction... | |
| Conwy Lloyd Morgan - Water - 1882 - 216 pages
...towards this perpendicular. 1541. In water at whatever oblique angle the ray strikes the surface, the **ratio of the sine of the angle of incidence to the sine of the angle of refraction is** 1.336. In other substances the ratio is different. 1542. If instead of passing from the less to the... | |
| Henry Kiddle - Physics - 1883 - 272 pages
...being greater or less than the former, according to the relative density of the refracting medinm. The **ratio of the sine of the angle of incidence to the...of the angle of refraction is called the index of** refrnction.\ It varies with the medinm, * " To account for refraction, let us for the sake of Bimplicity... | |
| Hermann Wilhelm Vogel - 1883
...what mathematicians call the sines of the angles. Thus ad is the sine of i, and bf the sine of r. The **ratio of the sine of the angle of incidence to the sine of the angle of refraction is** constant. This ratio is, when light leaves air for water, 4 to 3 ; that is, the sine bf is f times... | |
| Alfred Payson Gage - Physics - 1885 - 439 pages
...boundary plane ; if from a denser into a rarer medium, it is refracted from the perpendicular. The **ratio of the sine of the angle of incidence to the...angle of refraction is called the index of refraction,** and is the same as the ratio of the velocity of the incident to that of the refracted light. When a... | |
| |