Lord Kelvin: An Account of His Scientific Life and Work

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J. M. Dent & Company, 1908 - 319 pages

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Page 114 - When equal quantities of mechanical effect are produced by any means whatever from purely thermal sources, or lost in purely thermal effects, equal quantities of heat are put out of existence or are generated.
Page 114 - it is impossible by means of inanimate material agency to derive mechanical effect from any portion of matter by cooling it below the temperature of the coldest of surrounding objects.
Page 234 - ... lowering of the surface temperature. Taking the second objection first, I answer it by saying, what I think cannot be denied, that a large mass of melted rock, exposed freely to our air and sky, will, after it once becomes crusted over, present in a few hours, or a few days, or at the most a few weeks, a surface so cool that it can be walked over with impunity.
Page 114 - If an engine be such that, when it is worked backwards, the physical and mechanical agencies in every part of its motions are all reversed (see 89), it produces as much mechanical effect as can be produced by any thermodynamic engine, with the same temperatures of source and refrigerator, from a given quantity of heat.
Page 237 - The cry for reform which had been raised without is superfluous, inasmuch as we have long been reforming from within with all needful speed. And the critical examination of the grounds upon which the very grave charge of opposition to the principles of natural philosophy has been brought against us rather shows that we have exercised a wise discrimination in declining to meddle with our foundations at the bidding of the first passer-by who fancies our house is not so well built as it might be.
Page 14 - William Ramsay's lectures on Roman antiquities and readings of Juvenal and Plautus as more interesting than many a good stage play that I have seen in the theatre. Happy it is for our university, and happy for myself, that his name, and a kindred spirit, are with us still in my old friend and colleague, our senior professor, George Ramsay. Greek, under Sir Daniel Sandford and Lushington, logic under Robert Buchanan, moral philosophy under William Fleming-, natural...
Page 67 - The more elementary of the treatises by Thomson and Tait, along with Dynamics and Hydrostatics by Bottomley, will be used for the work required of all students of Natural Philosophy in the regular curriculum. The whole or certain specified parts of the larger treatise will be prescribed in connection with voluntary examinations and exercises in the class, and for candidates for the degree of MA with Honours. Students who desire to undertake these higher parts of the business of the class ought to...
Page 226 - ... that accords well with what is known concerning other parts of the economy of the world. In the continuation of the different species of animals and vegetables that inhabit the earth, we discern neither a beginning nor an end...
Page 256 - ... as large as a football,1 to be magnified up to the size of the earth, each constituent molecule being magnified in the same proportion. The magnified structure would be more coarse grained than a heap of small shot, but probably less coarsegrained than a heap of footballs.
Page 108 - If we do so however, we meet with innumerable other difficulties — insuperable without further experimental investigation and an entire reconstruction of the theory of heat from its foundation. It is indeed to experiment we must look, either for a verification of Carnot's axiom and an explanation of the difficulty we have been considering, or for an entirely new basis of the theory of heat.

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