A School Compendium of Natural and Experimental Philosophy, Embracing the Elementary Principles of Mechanics, Hydrostatics, Hydraulics, Pneumatics, Acoustics, Pyronomics, Optics, Electricity, Galvanism, Magnetism, Electro-magnetism, Magneto-electricity, and Astronomy: Containing Also a Description of the Steam and Locomotive Engines, and of the Electro-magnetic TelegraphCollins & brother, 1860 - 470 pages |
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acid air-pump angle aphelion apparatus appear atmosphere attraction axis ball barometer battery called cause centre of gravity circle colors comet communicated concave mirror condensed constructed convex convex lens copper cylinder degree diameter direction distance earth eclipse effect elastic electricity equal Explain Fig fall feet fluid focus force friction fulcrum galvanic glass greater heat hydrometer inches inclined plane instrument Jupiter length lens lever Leyden jar light liquid machine magnet means mechanical mercury metal miles minor planets moon motion move namely object orbit particles pass pendulum perihelion perpendicular piston placed planets plate pole portion pounds pressure prime conductor principle produced properties proportion pulley pump quantity rays reflected refracted represents retina revolve rise screw seen side space specific gravity stars steam substances surface telegraph telescope tion tricity tube Uranus valve vapor velocity vessel vibrations voltaic pile weight wire zinc
Popular passages
Page 200 - The trunk of an elephant that can pick up a pin or rend an oak is as nothing to it. It can engrave a seal, and crush masses of obdurate metal...
Page 147 - Whatever change of weather suddenly follows a change in the barometer, may be expected to last but a short time. Thus, if fair weather follow immediately the rise of the mercury, there will be very little of it; and, in the same way, if foul weather follow the fall of the mercury, it will last but a short time.
Page 118 - ... 2, and by this pressure forced into the spout. where, meeting with the particle 3, it presses it upwards, and this pressure will be continued from 3 to 4, from 4 to 5, and so on, till the water in the spout has risen to a level with that in the body of the vessel. If water be poured into the spout, the water will rise in the same manner...
Page 352 - The third law teaches that, in the motion of the planets, the squares of the times of revolution are as the cubes of the mean distances from the sun...
Page 46 - B it receives in return a blow equal to that which it gave, but in a contrary direction, and its motion is thereby stopped, or, rather, given to B. Therefore, when a body strikes against another, the quantity of motion communicated to the second body is...
Page 70 - Horeb," a voice was heard, saying, " draw nigh hither, and put off thy shoes from off thy feet; for the place where thou standest is holy ground.
Page 318 - ... strands of copper bell-wire, covered with cotton threads, each thirty-one feet long : about eighteen inches of the ends are left projecting, so that only twenty-eight feet of each actually surround the iron ; the aggregate length of the coils is therefore 728 feet. Each strand is wound on a little less than an inch : in the middle of the horseshoe it forms three thicknesses of wire, and on the ends, or near the poles, it is wound so as to form six thicknesses.
Page 141 - ... and exhalations from the earth, which float in it, and act in some degree as a covering, which preserves us equally from the intensity of the sun's rays, and from the severity of the cold.
Page 147 - ... may be expected to last but a short time. Thus, if fair weather follow immediately the rise of the mercury, there will be very little of it ; and, in the same way, if foul weather follow the fall of the mercury, it will last but a short time. 4. If fair weather continue for several days, during which the mercury continually falls, a long succession of...
Page 247 - To remedy this defect, achromatic lenses were formed by the union of a convex lens of crown glass with a concave lens of flint glass.