A Text-book on the Elements of Physics: For High Schools and Academies

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Ginn & Company, 1888 - Physics - 439 pages
 

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Page 117 - Newton's Third Law of Motion: To every action there is an equal and opposite reaction.
Page 430 - 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.
Page 336 - Why the image is seen as far behind the mirror as the object is in front of it.— Let AB be an arrow held Fig.
Page 46 - But it indirectly feels the pressure of the air on the surface of the water in the open vessel, and it is this pressure that sustains the water in the jar.
Page 1 - By impenetrability is meant that no two portions of matter can occupy the same space at the same moment.
Page 260 - The bath used is a solution of a salt of the metal to be deposited. The cyanides of gold and silver are generally used for gilding and silvering. Many of the base metals require to be electro-coppered first, in order to secure the adhesion of the gold or silver. The magneto-electric machine has almost completely replaced the voltaic battery for electrotyping and electroplating purposes.
Page 347 - The quotient found by dividing the sine of the angle of incidence by the sine of the angle of refraction, is called the index of refraction.
Page 393 - The meter is, approximately, the tenmillionth part of the distance from the Equator to the North Pole.

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