| David Gregory - Astronomy - 1715 - 634 pages
...SCHOLIUM. If the Dioptric denfity of the Atmofphere were known in any given diftance from the Earth, or **the ratio of the Sine of the Angle of incidence to the Sine of the** refraeted Angle, in the paflage of a Ray thro' its Surface concentric with the Earth, whofe diftance... | |
| Meteorology - 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 - Geography - 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... | |
| John Rowning - Astronomy - 1744 - 470 pages
...fame Degree of fntenfenefs, whatever be the Velocity they move with ; It may be demonjtrated, that **the Ratio of the Sine of the Angle of Incidence to the Sine of** ibe Angle of RefratJian, will be given. But in Refraliion of Light, the Ratio of thofe Sines is given... | |
| Isaac Newton - Calculus - 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 - Astronomy - 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 - Astronomy - 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... | |
| Encyclopedias and dictionaries - 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 - Human physiology - 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) - Electronic journals - 1832 - 564 pages
...enunciations, some of which may appear elementary, yet lead to results of a less obvious nature. rliiey **are as follows; — 1. In all refractions the ratio...refracting mediums a third medium, terminated by parallel** surfaces', be inter.posed, the whole refraction will remain unchanged. 3. At the vertex of a given... | |
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