Physiography for BeginnersMacmillan & Company, 1896 - 344 من الصفحات |
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مقاطع مشهورة
الصفحة 33 - Every particle of matter, in the universe, attracts every other particle with a force, which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
الصفحة 32 - Change of motion is proportional to the impressed force, and takes place in the direction of the straight line in which the force acts.
الصفحة 35 - Parallelogram of Forces. If two forces, acting at a point, be represented in magnitude and direction by the...
الصفحة 39 - Every body continues in its state of rest or of uniform motion in a straight line, unless it is compelled to change that state by forces impressed upon it.
الصفحة 34 - It is well known that the earth is not a perfect sphere, but is flattened at the poles, being what astronomers call an oblate spheroid.
الصفحة 39 - The rate of change of momentum is proportional to the impressed force, and takes place in the direction in which the force acts.
الصفحة 172 - In whatever direction a body moves on the surface of the earth there is a force arising from the earth's rotation which deflects it to the right in the northern, but to the left in the southern hemisphere.
الصفحة 45 - CHAPTER IV THE FIRST LAW OF THERMODYNAMICS Mechanical Work. In the science of mechanics work is measured by the product of a force and the distance through which the force acts in the direction of the force or w = /. 5.
الصفحة 177 - 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.
الصفحة 184 - If the squares of the times of revolution of the planets round the sun be divided by the cubes of their mean distances, the quotient will be the same for all the planets.