THE MECHANICS' MAGAZINE

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Seite 274 - The squares of the periods of revolution of any two planets are proportional to the cubes of their mean distances from the sun.
Seite i - Men, my brothers, men the workers, ever reaping something new : That which they have done but earnest of the things that they shall do...
Seite 222 - Plenty of blank leaves, I see!" the Tortoise cheerily remarked. "We shall need them all!" (Achilles shuddered.) "Now write as I dictate: — (A) Things that are equal to the same are equal to each other.
Seite 28 - If we neglect this subject, we cannot expect to do so with impunity; nor ought we to be surprised if, ere many years are over, a hot season give us sad proof of the folly of our carelessness.
Seite 469 - Well, we must take things as they are, and make the best of them. So Frank and I walked on through the pleasant fields in the darkening twilight, and I for one enjoyed...
Seite 297 - The hydrostatic pressure applied to force the liquid through any of the tubes will cause them to swell, and to press against the others, which will thus, by peristaltic action, compel the liquid contained in them to move in different parts of them in one direction or the other. A long solid cylinder of...
Seite 390 - C 42. 6.5 Procedure: 6.5.1 End Preparation and Capping — Core specimens to be tested in compression shall have ends that are essentially smooth and perpendicular to the axis and of the same diameter as the body of the specimen. Before making the compression test, cap the ends of the specimen in order to meet the requirements of Method C 6 1 7.
Seite 28 - I have thought it a duty to record these facts that they may be brought to the atten tion of those who exercise power or have responsibility in relation to the condition of our river; there is nothing figurative in the words I have employed, or any approach to exaggeration; they are the simple truth. If there be sufficient authority to remove a putrescent pond from the neighbourhood of a few simple dwellings, surely the river which flows for so many miles through London ought not to be allowed to...
Seite 444 - ... Paris, the metal works as well as silver. It may be whitened easily by dipping the piece in a concentrated solution of soda or potash, and passing it then into nitric acid. This acid acts differently according as it is itself pure or mixed with chlorhydric acid, and according as the aluminium is pure or not. Aluminium is most easily soldered when alloys are used containing aluminium. The alloys most convenient are those with silver, zinc or tin ; the point of fusion being below that of aluminium,...
Seite 298 - Balaklava wire should be examined. He remarked that a part of the theory communicated by himself to the Royal Society last May, and published in the Proceedings, shows that a wire of six times the length of the Varna and Balaklava wire, if of the same lateral dimensions, would give thirty-six times the retardation, and thirty-six times the slowness of action. If the distinctness of utterance and rapidity of action practicable with the Varna and Balaklava wire are only such as to be not inconvenient,...

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