# Elementary Physics

American book Company, 1897 - Physics - 317 pages

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### Popular passages

Page 80 - Principle states that a body wholly or partially immersed in a fluid is buoyed up by a force equal to the weight of the fluid displaced by it.
Page 31 - Every body continues in its state of rest, or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
Page 277 - The strength of the current is proportional to the tangent of the angle of deflection.
Page 46 - Newton generalized the law of attraction into a statement that every particle of matter in the universe attracts every other particle with a force which varies directly as the product of their masses and inversely as the square of the distance between them; and he thence deduced the law of attraction for spherical shells of constant density.
Page 153 - The quantity of heat that will raise the temperature of one pound of water one Fahrenheit degree is equivalent to about 778 footpounds.
Page 151 - ... the amount of heat required to raise the temperature of the same weight of water one degree.
Page 212 - The force that is mutually exerted between two charges varies directly as the product of the charges, and inversely as the square of the distance between them.
Page 134 - It consists in the agitation of the molecules of matter, and is generally recognized by the sensation of warmth to which it gives rise.
Page 39 - A (Fig. 25) against an elastic surface at B, the center of the semicircle, it will be reflected back to C, making the angles, ABD and CBD, equal. If the ball or the body at B is not perfectly elastic (eg, if a lead ball is used), the angle of reflection will be greater than the angle of incidence.
Page 107 - It varies directly as the square root of the elasticity, and inversely as the square root of the density.