Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 210
n each bulbabove the water line and electric connections are provided,by which the current is sent through the coils in alternationas the bulbs tilt. The current thus commuted heats firstone coil and then the other, causing the transfer of thewater from one bulb to the other in the manner… … i88 EXPERIMENTAL SCIE-\CE. CRVOPHORUS. Wollastoiis cryophorus is similar in form and principleto the pulse glass, the only difference being that the tubeconnecting the two bulbs is made much larger, to avoidchoking by ice—a thing sure to occur when the tube is ofsmall diameter—the water vapor which…
Physics · Lantern projection · Electric apparatus and appliances
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