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Page 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.
Page 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.
Page 351 - E to A, from A to B, from B to C, and from C to...
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 lost by the first; but...
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 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.
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 70 - Draw not nigh hither ; put off thy shoes from off thy feet ; for the place where thou standest is holy ground.
Page 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.
Page 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...

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