Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 413
Electric Mortar. Gassiots cascade, shown in Fig. 389, is a beautiful expe-riment, but requires an air pump. A goblet coated with tinfoil in the manner of a Leyden jar is placed under the tubu-lated bell of an air pump; a rod extends through the bellinto the goblet, and when the electric discharge…
Physics · Lantern projection · Electric apparatus and appliances
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