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FORE:Primarily, power is a product of heat; and wherever force and motion exist, they can be traced to heat as the generating element: whether the medium through which the power is [30] obtained be by the expansion of water or gases, the gravity of water, or the force of wind, heat will always be found as the prime source. So also will the phenomenon of expansion be found a constant principle of developing power, as will again be pointed out. As steam-engines constitute a large share of the machinery commonly met with, and as a class of machinery naturally engrosses attention in proportion, the study of mechanics generally begins with steam-engines, or steam machinery, as it may be called.Third. Reaction wheels, that are "enclosed," as it is termed, and filled with water, which is allowed to escape under pressure through tangental orifices, the propelling force being derived from the unbalanced pressure within the wheel, or from the reaction due to the weight and force of the water thrown off from the periphery.
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FORE:"Well, sir, not much beyond what you are sure to know already: that Japan declared war against Germany; that the Russians invaded Germany; that the French gained some important victories in Alsace; that the German fleet lost some ships...."
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FORE:
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FORE:One of the soldiers took me to the spot where two days before the Belgians had blown up the railway which had just now been repaired by the German engineers. According to his story eighty troopers had succeeded in surprising a guard of twelve and in pushing on to the railway.190
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