Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 553
n weight in the air, they fall with verydifferent velocities. The cause is the great disparity inthe extent of surfaces exposed to the resistance of the airas compared with the weights. Let a and b be two wheels re-sembling the arms of a windmill,with this difference only, that thevanes of b shall… … MECHANICS OF FLUIDS. 549 municated to them. In order that this may act under a receiver, a rod must be made to pass through an air- description and tight leather stuf ing-box e. at the end of the rod is a curved arm d, which drives the wheels. If the rotationtake place in vacuo, the two wheels a…
Mechanics · Acoustics · Optics
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