Introductory Course of Natural Philosophy for the Use of Schools and AcademiesBarnes & Burr, 1865 - 504 pages |
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Page 12
... mercury are dense bodies . Those in which the particles are not close together are said to be rare ; thus , steam and air are rare bodies . The densities of bodies having the same bulk are propor- tional to their weights ...
... mercury are dense bodies . Those in which the particles are not close together are said to be rare ; thus , steam and air are rare bodies . The densities of bodies having the same bulk are propor- tional to their weights ...
Page 15
... . If a quantity of mercury is ( 9. ) What is Porosity ? When are bodies porous ? When dense ? Explain the experiment showing the porosity of leather . poured into the upper cup , and the air exhausted GENERAL PROPERTIES OF BODIES . 15.
... . If a quantity of mercury is ( 9. ) What is Porosity ? When are bodies porous ? When dense ? Explain the experiment showing the porosity of leather . poured into the upper cup , and the air exhausted GENERAL PROPERTIES OF BODIES . 15.
Page 16
... mercury , being pressed down by the external air , is seen falling through the leather in small drops like rain . Gold was shown to be porous by some Florentine philosophers in the following manner . A hollow sphere of gold was filled ...
... mercury , being pressed down by the external air , is seen falling through the leather in small drops like rain . Gold was shown to be porous by some Florentine philosophers in the following manner . A hollow sphere of gold was filled ...
Page 67
... mercury , the mercury will rise into the lead by capillary action , and flowing over the edge of the vessel will descend along the longer branch and escape from the lower extremity . In this way the vessel may be slowly emptied of the ...
... mercury , the mercury will rise into the lead by capillary action , and flowing over the edge of the vessel will descend along the longer branch and escape from the lower extremity . In this way the vessel may be slowly emptied of the ...
Page 68
... mercury , the volume of the gas is diminished by being absorbed by the coal . It is found that the charcoal absorbs in this way thirty - five times its own volume of the gas . Charcoal also absorbs other gases in even still greater ...
... mercury , the volume of the gas is diminished by being absorbed by the coal . It is found that the charcoal absorbs in this way thirty - five times its own volume of the gas . Charcoal also absorbs other gases in even still greater ...
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Common terms and phrases
acid action angle angle of incidence apparatus atmosphere attraction axis ball barometer battery becomes body boiling called camera obscura carbonic acid catgut causes centre of gravity centrifugal force colors compressed concave condenser conductor consists convex convex lens copper cord cylinder density Describe direction distance earth effect elastic electricity electrified electrometer equal equilibrium example expansion experiment Explain flow fluid force galvanometer gases glass heat Hence hygrometer Illustrate inch inclined plane instrument iron latent heat lens lenses lever Leyden jar light liquid machine magnet Manometer mercury metal mirror motion needle object particles passes pendulum pipe piston placed plane plate poles position pressure principal focus principle produce pulley quantity radiation rays reflected reflector refraction resistance shown in Fig solid sound specific gravity steam surface telescope temperature tension thermometer tion transmitted tricity tube valve vapor velocity vessel vibrations weight wheel whilst wire zinc
Popular passages
Page 146 - Archimedes stated that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid.
Page 145 - A body immersed in a liquid is buoyed up by a force equal to the weight of the liquid displaced by it.
Page 13 - IMPENETRABILITY is that property by virtue of which no two bodies can occupy the same place at the same time. This property is self-evident, although phenomena are observed which would seem to conflict with it. Thus, when a pint of alcohol is mixed with a pint of water, the volume of the resulting mixture is less than a quart. This...
Page 184 - ... air and the smallness of the tube. The bulb is therefore heated, when the air within expands, and a portion escapes in bubbles through the mercury. On cooling, the pressure of the external atmosphere forces a quantity of mercury through the tube into the bulb. By repeating this operation a few times, the bulb and a portion of the tube are filled with mercury. The whole is then heated till the mercury boils, thus filling the tube, when the funnel is melted off and the tube hermetically sealed...
Page 36 - 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 160 - Sounds are propagated better in calm than in stormy weather, also with more intensity in the direction of the wind than in the contrary direction. A modification of the law, that the intensity of sound varies inversely as the square of the distance, takes place when sound is caused to travel through long smooth tubes. The sound moves like the rings produced in a pool of water by a falling stone: they...
Page 271 - The following definitions apply equally to concave and convex mirrors : The middle point of the mirror is called its vertex. The centre of the sphere, of which the mirror forms a part, is called the optical centre.
Page 437 - Two wires, one connected with the positive, and the other with the negative pole of a...
Page 280 - ... 1. The planes of incidence and refraction coincide, both being normal to the surface separating the media, at the point of incidence. 2. The sine of the angle of incidence is equal to the sine of the angle of refraction multiplied by a constant quantity.
Page 215 - The heat which is expended in changing a body from the solid to the liquid state, or from the liquid to the gaseous state, is called latent heat.