 | 1723 - 1336 pages
...the refracted Angle ; fo that IH being perpendicular to FH and IG perpendicular to FG, IH is to IG as the Sine of the Angle of Incidence to the Sine of the refracted Angle, and the Ratio of IH to IG is given, as likewife the Ratio of IK to I G. Therefore... | |
 | Bernhardus Varenius - 1734 - 562 pages
...Refraftkn in it of a Star in a certain Altitude, to find tb« Law of Refraftion, or the Proportion of the Sine of the Angle of Incidence^ to the Sine of the re~ f ratted Angle ; or to find the tbicknefi of the Air by that Refrattion. THE Altitude of the Air... | |
 | Isaac Newton - 1745 - 524 pages
...= x, CD =3 : whence becaufe GE, EB, EF are proportional, you have EB = </zx: moreover, if a exprefs the Ratio of the Sine of the Angle of Incidence to the Sine of the Angle of Refraction, then BD = az : likewife from the fimilar Triangles DBE, DGH, you have DB (az) : BE (v£T)... | |
 | John Rowning - 1758 - 500 pages
...fame Degree of Intenfenefs, whatever be the Velocity they move with*, it may he demenjlraied, that the Ratio of the Sine of the Angle of Incidence to the Sine of the Angle of Refraftion, will be given. But in Refraflion cf Light, the Ratio of thofe Sines is given in Fail ;... | |
 | John Ewing - 1809 - 672 pages
...velocity of the ray of light, after it enters a denser medium, is to its velocity before it enters it, as the sine of the angle of incidence to the sine of the angle of refraction. For the greater that the attractive force of the denser medium is, the more will the ray... | |
 | 1823 - 886 pages
...the angle EFK ; that is, as the sine of the angle ЛВН to the sine of the angle FEI; that is, as the sine of the angle of incidence to the sine of the angle of refraction. By the same reasoning it will appear that light, moving in the direction and with the velocity... | |
 | William Pulteney Alison - 1831 - 538 pages
...the surface of the lens, — and by the degree of its refractive power, that is, by the proportion of the sine of the angle of incidence, to the sine of the angle of refraction, of all rays that enter it from air. Now, these three conditions are the same in regard... | |
 | Royal Society (Great Britain) - 1832 - 550 pages
...elementary, yet lead to results of a less obvious nature. They are as follows; — -1. In all refractions the ratio of the sine of the angle of incidence to the sine of the angle of refraction, is constant. 2. If between two refracting mediums a third medium, terminated by parallel svwfocefe, Y><t... | |
 | Royal Society (Great Britain) - 1832 - 564 pages
...elementary, yet lead to results of a less obvious nature. rliiey are as follows; — 1. In all refractions the ratio of the sine of the angle of incidence to the sine of the angle of refraction, is constant. 2. If between two refracting mediums a third medium, terminated by parallel surfaces', be... | |
 | Harvey Goodwin - 1849 - 588 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... | |
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When a ray of light passes from one medium to another, it is refracted so that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the velocities in the two media. 
