Fourteen Weeks in Natural PhilosophyA.S. Barnes & Company, 1869 - 334 pages |
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Common terms and phrases
acid angle apparatus atom attraction ball battery becomes body boiling causes chemical clouds coil cold color condensed convex convex lens cool copper cord cubic cubic foot cylinder Define Describe distance drop earth elastic elec electro-magnet electroscope ether waves experiment fall feet filled friction frictional electricity galvanic gases glass tube heat hence hydrogen Illustrate inches inclined plane insulated iron latent heat length lens lever Leyden jar liquid Magdeburg Hemispheres magnet mercury metal miles mirror molecules motion needle number of vibrations object particles passes pendulum piston plate polarized pressure prime conductor principle produced radiation rays of light reflected refracted rise sensible heat shown in Fig solid sound sound-wave south pole spark specific gravity steam strike substance surface temperature tion tricity vacuum vapor velocity vessel visual angle voltaic waves weight wheel wire zinc
Popular passages
Page 244 - The removal, for a single summer night, of the aqueous vapour from the atmosphere which covers England, would be attended by the destruction of every plant which a freezing temperature could kill. In Sahara, where ' the soil is fire and the wind is flame,' the refrigeration at night is often painful to bear.
Page 95 - Pig. 65. a steady force : in this it is a sudden blow, and is equal to the -momentum of the hammer. THE PULLEY is simply another form of the lever which turns about a fixed axis or fulcrum. It consists of a wheel, within the grooved edge of which runs a cord.
Page 48 - Newtonian theory of attraction and gravitation, which demonstrates that " every particle of matter in the universe attracts every other particle of matter, with a force directly proportional to its quantity of matter, and decreasing as the square of the distance increases.
Page 115 - Archimedes' principle, that a body immersed in water is buoyed up by a force equal to the weight of the water displaced by the body.
Page 21 - Water is composed of two atoms of hydrogen and one of oxygen.
Page 96 - Since, then, the power is only one-half the weight, it must move through twice the space ; in other words, by taking twice the time, we can lift twice as much. Here power is gained and time lost.
Page 49 - II. The weight of a body above the surface of the earth decreases as the square of the distance from the centre of the earth increases.
Page 116 - Weigh the body in air, and in water ; the difference is the weight of its bulk of water : divide its weight in air by its loss of weight in water ; the quotient is the specific gravity. Thus, sulphur loses...