| 1734 - 488 pągines
...fucb a manner, that they may all converge to the fame Point in its Axis, or unite in one Focus nearly, The Ratio of the Sines of the Angles of Incidence and Refraction of the fever al Sorts of Rays being refpeftively given, and allowed conflant and immutable, according... | |
| John Ewing - 1809 - 672 pągines
...but a point. Let x=the sine of the angle of incidence, and therefore VI — xx=its cosine, r=l; put the ratio of the sines of the angles of incidence and refraction, as 1 : p, then 1 : p : : x : px=the sine of the angle of refraction; and Vl — pjx"= its cosine. The... | |
| David Brewster - 1813 - 518 pągines
...deviation of the solar ray, and the angle contained by the refracting surfaces, being accurately measured, the ratio of the sines of the angles of incidence and refraction may be found by a simple calculation. In order to obtain an accurate measure of this deviation, Sir... | |
| David Brewster - 1831 - 328 pągines
...air, and in the case of glass or mica at Tj'jj of that thickness ; the numbers 1.336, 1.525 expressing the ratio of the sines of the angles of incidence and refraction in the substances which produce the colours. From the phenomena thus briefly described, Sir Isaac Newton... | |
| Thomas Webster - 1837 - 512 pągines
...one medium to another, the change which takes place in if" direction is expressed by saying, that ' the ratio of the sines of the angles of incidence and refraction is invariable for the same medium.' This we shall endeavour to explain. Let a vessel which is a hemisphere... | |
| William Whewell - 1837 - 1048 pągines
...difference of less than half a degree each way. When we consider how simple the law of refraction is, (that the ratio of the sines of the angles of incidence and refraction is constant for the same medium,) it appears strange that a person attempting 5 Optica, p. 411. " LUK... | |
| 1838 - 556 pągines
...difference of less than half a degree each way. ' When we consider how simple the law of refraction is (that the ratio of the sines of the angles of incidence and refraction is constant for the same medium), it appears strange that a person attempting to discover it, and drawing... | |
| 1845 - 334 pągines
...air, and in the case of glass or mica atT.Tjfjj of that thickness; the numbers 1.336, 1.525 expressing the ratio of the sines of the angles of incidence and refraction in the substances which produce the colours. From the phenomena thus briefly described, Sir Isaac Newton... | |
| Alan Stevenson - 1850 - 404 pągines
...assumes the form * The truth of the first of these equations (sin £ = m . sin 7) which merely expresses the ratio of the sines of the angles of incidence and refraction is obvious ; but owing to the great number of small angles about C, a little consideration may be required... | |
| Dionysius Lardner - 1851 - 802 pągines
...each transparent medium has its own particular refracting power, but for the same transparent medium the ratio of the sines of the angles of incidence and refraction is always the same. 980. Index of refraction. — The number which thus expresses the ratio of the... | |
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