Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 110
f paper, by radiallyslitting a disk, overlapping the edges, and sticking them to- GASES. 87 gether. The paper box for receiving the gas is five inchesin each of its dimensions, and is suspended from the scalebeam by a wire stirrup, so that it may be reversed. Afterbringing the scale to equilibrium… … Gas Wheel. heavier than air. Allowing the weights in the pan to remainthe same, the paper box is inverted, when the carbonic acidfalls out, and air takes its place. The balance beam againbecomes horizontal. Now, by opening a jar of hydrogenunder the box, the air is again displaced, this time,…
Physics · Lantern projection · Electric apparatus and appliances
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