 | David Gregory - Astronomy - 1715 - 634 pages
...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... | |
 | 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
...that t&e fecal Di/lanct of the Oblique Ray DB, is fuck, that the Line BF ihall be to the Line CB or CA as the Sine of the Angle of Incidence to the Sine of an Angle, which Angle is equal to the Difference between the Angle of Incidence and Ref radian ; therefore... | |
 | Isaac Newton - Calculus - 1745 - 524 pages
...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)... | |
 | John Rowning - Astronomy - 1758 - 500 pages
...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... | |
 | 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... | |
 | Encyclopedias and dictionaries - 1823 - 886 pages
...of 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... | |
 | 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... | |
 | Royal Society (Great Britain) - Electronic journals - 1832 - 550 pages
...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... | |
 | Royal Society (Great Britain) - Electronic journals - 1832 - 564 pages
...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... | |
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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. 
