Van Nostrand's Engineering Magazine, Volum 3

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D. Van Nostrand, 1870
 

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Passatges populars

Pàgina 120 - For wisdom is better than rubies; and all the things that may be desired are not to be compared to it. I wisdom dwell with prudence, and find out knowledge of witty inventions.
Pàgina 65 - Extend the line of division between the two parcels from the meander line to the center line of the river, as nearly as possible at right angles to the general course of the river at that point. This will preserve to each man the water front...
Pàgina 197 - WAR," authorizing the Secretary of War to provide for taking meteorological observations at the military stations and other points of the interior of the continent, and for giving notice on the northern lakes and sea-board of the approach and force of storms...
Pàgina 197 - War is also required to provide, in the system of observations and reports in charge of the chief signal officer of the army, for such stations, reports and signals as may be found necessary for...
Pàgina 197 - Be it resolved by the Senate and House of Bepresentatives of the United States of America in Congress assembled, That the Secretary of War be, and he hereby is, authorized and required to provide for taking meteorological observations at the military stations in the interior of the continent and at other points in the States and Territories of the United States, and for giving notice on the northern lakes and on the sea-coast, by magnetic telegraph and marine signals, of the approach and force of...
Pàgina 176 - All flesh is not the same flesh; but there is one kind of flesh of men, another flesh of beasts, another of fishes, and another of birds.
Pàgina 107 - Avogadro's law states that equal volumes of all gases at the same temperature and pressure contain the same number of molecules.
Pàgina 22 - ... in this bar magnet the lines of force run along the magnet itself, and, were its particles capable of free motion, they also would set their longest dimensions parallel to the lines of force — that is to say, parallel to the length of the magnet. This, then, is the explanation which I would offer of the lengthening of the bar. The bar is composed of irregular crystalline granules ; and, when magnetized, these granules tend to set their longest dimensions parallel to the axis of the bar. They...
Pàgina 107 - ... in fact, a true pocket-book, adapted for being carried in the waistcoat pocket, and containing a far greater amount and variety of information than most people would imagine could be compressed into so small a space The little volume has been compiled with considerable care and judgment, and we can cordially recommend it to our readers as a useful little pocket companion.
Pàgina 21 - ... permanent magnet. This is the celebrated theory of molecular currents propounded by Ampere. You observe it consists in the application of conceptions obtained from sensible masses of matter to insensible or atomic masses. Let us follow out this conception to what would appear its legitimate consequences. I have said that we obtain both attractions and repulsions from electric currents : all these effects are deduced from one law, which is, that electric currents flowing in the same direction...

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