Microcosm, 7권

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Hall & Company, 1890
 

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182 페이지 - By faith we understand that the worlds were framed by the word of God, so that the things which are seen were not made of things which are visible.
43 페이지 - Newton's velocity by the square root of the ratio of the specific heat of air at constant pressure, to its specific heat at constant volume, the actual or observed velocity is obtained.
152 페이지 - Every hypothesis is bound to explain, or, at any rate, not be inconsistent with, the whole of the facts which it professes to account for ; and if there is a single one of these facts which can be shown to be inconsistent with (I do not merely mean inexplicable by, but contrary to,) the hypothesis, the hypothesis falls to the ground, — it is worth nothing.
174 페이지 - Hope springs eternal in the human breast; Man never Is, but always To be blest; The soul, uneasy and confined from home, Rests and expatiates in a life to come.
124 페이지 - You have, I doubt not, a clear mental picture of the propagation of the sound from our exploding balloon through the surrounding air. The wave of sound expands on all sides, the motion produced by the explosion being thus diffused over a continually augmenting mass of air. It is perfectly manifest that this cannot occur without an enfeeblement of the motion. Take the case of a shell of air of a certain thickness, with a radius of one foot, reckoned from the centre of explosion. A shell of air of...
181 페이지 - Go to now, ye that say, To-day or to-morrow we will go into such a city, and continue there a year, and buy and sell, and get gain: whereas ye know not what shall be on the morrow. For what is your life ? It is even a vapor, that appeareth for a little time, and then vanisheth away.
26 페이지 - ... you ought to see the particles separated more widely apart. You ought, in short, to be able to seize the conception that a sonorous wave consists of two portions, in the one of which the air is more dense, and in the other of which it is less dense than usual. A condensation and a rarefaction, then, are the two constituents of a wave of sound...
124 페이지 - ... if its radius be three feet, it will contain nine times the quantity of matter ; if four feet, it will contain sixteen times the quantity of matter, and so on. Thus the quantity of matter set in motion augments as the square of the distance from the centre of explosion. The intensity or loudness of the sound diminishes in the same proportion.
26 페이지 - Scientific education ought to teach us to see the invisible as well as the visible in nature ; to picture with the eye of the mind those operations which entirely elude the eye of the body...
92 페이지 - A shell of air of the same thickness, but of two feet radius, will contain four limes tAe quantity of matter ; if its radius be three feet it will contain nine times the quantity of matter; if four feet it will contain sixteen times the quantity of matter, and so on. Thus the quantity of matter set in motion augments...

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