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" This is the same as saying that when a ray of light passes out of one medium into another, the... "
The Planetarium and Astronomical Calculator - Page 78
by Tobias Ostrander - 1832 - 262 pages
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A General History of Mathematics from the Earliest Times to the Middle of ...

Charles Bossut - Astronomy - 1803 - 580 pages
...Snell did not perceive, that his proposition amounted to the same thing as saying in other terms, that when a ray of light passes out of one medium into another, the sines of the angles it forms \n the two mediums with the vertical line always preserve a constant...
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Astronomy Explained Upon Sir Isaac Newton's Principles: And Made Easy to ...

James Ferguson - Astronomy - 1809 - 574 pages
...so much dimmer must it appear when the"b»re viewed by a telescope, than by the bare eye. eye. 171. When a ray of light passes out of one medium* into another, it is refracted, or turned out of its first course, more or less, as it falls more or less obliquely on the refracting surface which divides...
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A Plain Elementary and Practical System of Natural Experimental Philosophy ...

John Ewing - Astronomy - 1809 - 672 pages
...pores, and yet none of these pores exceeding any given diameter or magnitude. REFRACTION OF LIGHT. WHEN a ray of light passes out of one medium, into another of different density, in a direction perpendicular to the surface of the second medium, it is accelerated...
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A Complete System of Astronomy, Volume 1

Samuel Vince - Astronomia - 1814 - 602 pages
...uniformly, for the reasons above given, and therefore the difference of the densities is constant. But when a ray of light passes out of one medium into another, it is attracted by a force which depends on the difference of their densities, and therefore when the difference...
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An Introduction to Astronomy ...

John Bonnycastle - Astronomy - 1816 - 490 pages
...planets receive from the sun, decreases in proportion as the squares of their distances increase; and when a ray of light passes out of one medium into...another, it is refracted or turned out of its course, according as it falls more or less obliquely on the refracting surface which divides the two mediums....
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The Contemplative Philosopher: Or, Short Essays on the Various ..., Volume 2

Richard Lobb - Nature study - 1817 - 418 pages
...familiar illustration, and will account for a very common, but seemingly extraordinary phenomenon. When a ray of light passes out of one medium into another, it is refracted, or turned out of its first course, according as it falls more or less obliquely on the refracting surface which divides...
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The Scientific Library; Or, Repository of Useful and Polite Literature ...

Thomas Smith - Astronomy - 1818 - 158 pages
...•whatever parts of their orbits the eclipse happen, they are invariably atlected in the same manner. When a ray of light passes out of one medium into another of different density, it is said to be refracted, or breken in its course, in proportion as it falls...
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Aristarchus; Or, The Principles of Composition: Containing a Methodical ...

Philip Withers - English language - 1822 - 414 pages
...posteriori from the Effect to the Cause: they are DISTINGUISHED by the Terms SYNTHESIS and ANALYSIS. TERMED. When a Ray of Light passes out of one Medium into another, and is bent out of its Course at the common Surface, this Bending is TERMED REFRACTION ;* and when...
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Solutions of the Cambridge Problems: From 1800 to 1820, Volume 2

John Martin Frederick Wright - Mathematics - 1825 - 798 pages
...freehold estate after the death of a person now sixty years of age, the rate of interest being given ? 11. When a ray of light passes out of one medium into another, as the angle of incidence increases, the angle of deviation also increases. 12. To find the least velocity,...
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A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - Mathematics - 1825 - 1046 pages
...any surface, is turned back into the medium in which it was moving, it is said to be reßected. 8. When a ray of light passes out of one medium into another, and has its direction changed at the common surface of the two mediums, it is said to be refracted....
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