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" When a ray passes from a rarer to a denser medium, it is refracted or bent towards the perpendicular ; when a ray of light passes from a denser to a rarer medium... "
Elements of Astronomy with Numerous Examples and Examination Papers - Page 53
by George W. Parker - 1902 - 233 pages
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Scientific Agriculture: Or, The Elements of Chemistry, Geology, Botany and ...

Miles M. Rodgers - Agriculture - 1850 - 296 pages
...the one in which it approached the surface ; thus the angles of reflection and incidence are equal. When a ray of light passes from a rarer to a denser medium, it is refracted, or turned out of its course : when it passes from a rare to a denser medium, as from the air into water,...
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Hand-books of Natural Philosophy and Astronomy, Volume 3

Dionysius Lardner - Astronomy - 1854
...liquid matter composing the globe, decreases gradually in density in rising from the surface (719); that when a ray of light passes from a rarer to a denser transparent medium, it is deflected towards the perpendicular to their common surface ; and that the...
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An Analysis of Physiology: Being a Condensed View of Its Most Important ...

John James Reese - Anatomy - 1852 - 368 pages
...distance of over ninety six millions of miles. Light travels in straight lines, through a uniform medium. When a ray of light passes from a rarer to a denser medium, it is bent or refracted towards a perpendicular ; — when passing from a denser to a rarer medium, it is...
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Hand-books of Natural Philosophy and Astronomy, Volume 3

Dionysius Lardner - Astronomy - 1858
...liquid matter composing the globe, decreases gradually in density in rising from the surface (719); that when a ray of light passes from a rarer to a denser transparent medium, it is deflected towards the perpendicular to their common surface ; and that the...
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Exercises in Orthography and Derivation

John Purdue Bidlake - 1861 - 170 pages
...consent, as — of our ideas. 12. " There shall no — be given, but the — of the prophet Jonas." 13. When a ray of light passes from a rarer to a denser medium, the — of the angle of incidence is greater than the — of the angle of refraction. 14. " They sent...
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Popular and mathematical astronomy, with the principal formulŠ of plane and ...

William Thomas Read - 1862
...and the altitude is too great by this depression. The correction for dip is therefore subtractive. When a ray of light passes from a rarer to a denser medium, it is bent towards the perpendicular, at the point at which it entered. This bending is called refraction....
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Lessons in Elementary Physics

Balfour Stewart - Physics - 1873 - 376 pages
...incident on this plane at D, and let FDG be a perpendicular to the plane at the same point, then as the ray of light passes from a rarer to a denser medium, it will be bent towards the perpendicular, as we see in the figure. There are two laws which regulate...
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The National Question Book: A Graded Course of Study for Teachers and Those ...

Edward Richard Shaw - Examinations - 1887 - 331 pages
...Increases. 53. It is refracted. ;• 54. The angle of incidence is equal to the angle of reflection. 55. When a ray of light passes from a rarer to a denser medium, it is bent toward a perpendicular drawn to the surface of the denser medium. The opposite occurs when a ray...
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Trigonometry, Surveying and Navigation

George Albert Wentworth - Navigation - 1895 - 412 pages
...density is only one-half as great as at the earth's surface. According to a fundamental law of optics, if a ray of light passes from a rarer to a denser medium, it is bent toward the perpendicular to the surface which separates the two media ; but if it passes from...
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A Treatise on Chemistry and Chemical Analysis: Arithmetic, elementary ...

Chemistry - 1900
...as on the lower side of the plate. The general law of refraction may, then, be expressed as follows: When a ray of light passes from a rarer to a denser medium it is usually refracted towards a line perpendicular to the surface of the latter, and, conversely, when...
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