A School Compendium of Natural and Experimental Philosophy: Embracing the Elementary Principles of Mechanics, Hydrostatics ... 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 TelegraphA. S. Barnes & Company, 1856 - Всего страниц: 470 |
Другие издания - Просмотреть все
Часто встречающиеся слова и выражения
acid air-pump angle aphelion apparatus appear ascer atmosphere attraction axis axle ball barometer battery called causes 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 heat hydrometer inches inclined plane instrument Jupiter length lens lever Leyden jar 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 reflected refracted represents retina revolve rise Saturn screw seen side space specific gravity stars steam substances surface telegraph telescope tion tricity tube Uranus valve vapor velocity vessel vibrations voltaic weight wheel wire zinc
Популярные отрывки
Стр. 102 - ... wheel is allowed to pass. Now, if this wheel has sixty teeth, as is common, it will just turn round once for sixty beats of the pendulum, or seconds; and a hand fixed on its axis, projecting through the dial-plate, will be the second hand of the clock.
Стр. 346 - This disregard is neither supercilious nor causeless. The constellations seem to have been almost purposely named and delineated to cause as much confusion and inconvenience as possible. Innumerable snakes twine through long and contorted areas of the heavens, where no memory can follow them : bears, lions, and fishes, large and small, northern and southern, confuse all nomenclature, &c.
Стр. 351 - E to A, from A to B, from B to C, and from C to...
Стр. 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 lost by the first; but...
Стр. 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...
Стр. 200 - It can engrave a seal, and crush masses of obdurate metal before it ; draw out, without breaking, a thread as fine as gossamer, and lift a ship of war like a bauble in the air. It can embroider muslin and forge anchors, cut steel into ribbons, and impel loaded vessels against the fury of the winds and waves.
Стр. 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...
Стр. 70 - Draw not nigh hither ; put off thy shoes from off thy feet ; for the place where thou standest is holy ground.
Стр. 254 - The spectrum, formed by a glass prism, being divided into 360 parts, it is found, that the red occupies 45 of those parts, the orange 27, the yellow 48, the green 60, the blue 60, the indigo 40, and the violet 80. By mixing the seven primitive colors in these proportions, a white is obtained ; but, on account of the impurity of all colors, it will be of a dingy hue.
Стр. 91 - Roads which are not level may be regarded as inclined planes, and loads drawn upon them in carriages, considered in reference to the powers which impel them, are subject to all the conditions which have been established for inclined planes. The inclination of the road is estimated by the height corresponding to some proposed length. Thus...