A Natural Philosophy: Embracing the Most Recent Discoveries in the Various Branches of Physics

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D. Appleton, 1860 - Physics - 450 pages
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Page 298 - Leyden, of much eminence, said that " he felt himself struck in his arms, shoulders, and breast, so that he lost his breath ; and it was two days before he recovered from the effects of the blow and the terror ; adding, that he would not take a second shock for the kingdom of France.
Page 171 - The marine barometer has not yet been in general use for many years, and the author of this work was one of a numerous crew who probably owed their preservation to its almost miraculous warning. It was in a southern latitude ; the sun had just set with placid appearance, closing a beautiful afternoon, and the usual mirth of the evening watch was proceeding, when the captain's order came to prepare with all haste for a storm. The barometer had began to fall with appalling rapidity.
Page 372 - Venus, a pea, on a circle of 284 feet in diameter ; the Earth, also a pea, on a circle of 430 feet ; Mars, a rather large pin's head, on a circle of...
Page 34 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Page 36 - CIRCLE is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre; as the figure ADB E.
Page 388 - A man placed on one of them would spring with ease 60 feet high, and sustain no greater shock in his descent than he does on the earth from leaping a yard.
Page 182 - In a vacuum, boiling commences at a much lower temperature than in the air. This is shown by placing some hot water under a receiver and exhausting the air. The pressure of the atmosphere being removed from its surface, the water soon boils ; but it comes to rest the moment that air is readmitted. For the same reason, water boils at a lower temperature on the top of a mountain than at its base, as has often been observed by travellers. 442. If beer is placed under a receiver and the air exhausted,...
Page 27 - Hills, trees, and houses, therefore, though they occupy the same place with respect to each other, are really travelling through space with immense rapidity. Yet as this is th'e case with ourselves, with the atmosphere, and all things about us, we regard an object as absolutely at rest if it has no other motion than this. 55. VELOCITY. — The Velocity of a body is the rate at which it moves. This rate is determined by the space it passes over in a given time. The greater the space, the greater the...
Page 94 - These simple machines are the lever, the wheel and axle, the pulley, the inclined plane, the wedge, and the screw. The lever.
Page 330 - When one of the poles was applied to a nerve under the eyebrow and the other to the heel, the most extraordinary grimaces were produced : " every muscle of the countenance was simultaneously thrown into fearful action ; rage, horror, despair, anguish, and ghastly smiles, united their hideous expression in the murderer's face.

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