Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 120
the rubber, clamping-it to the wood, and at the same time making an air-tio-htjoint around the tube. ^ The suction tube of the pump is applied to the smallbrass tube, and the soft rubber disk is pressed down uponthe mouth of the globe, when the operation of producing avacuum is begun. After a few…
Physics · Lantern projection · Electric apparatus and appliances
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