Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 111
its buoyancy that its contents are lighter than air.If the balance is allowed to remain for a time, the gas willbe diffused, and the balance beam will return again to thehorizontal position. To determine the weight of air, a globe provided with astop cock is completely exhausted and weighed. Air is… … Hand Glass. weight in the first and second cases will be the weight ofthe air contained by the globe. One hundred cubic inches of dry air under an atmo-spheric pressure of 30 inches, and at the temperature of 60°Fahrenheit, weigh 31 grains. The same volume of carbonicacid under the same conditions…
Physics · Lantern projection · Electric apparatus and appliances
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