Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 590
CTRIC CURRENTS. 567 one of those shown in Fig. 548. These spots, to the unaidedeye, appear like small holes through the film ; but micro-scopic examination shows them as composed of a large num-ber of very crooked lines cut out of the smoke film, andstrongly resembling a tuft of wool. Fig. 549… … -AV^^- ^^ Position of the Plate between tiie Terminals. have some influence oia the direction of the discharge and,consequently, on the character of the lines; but the othermarkings shown are so characteristic, and so evidently inde-pendent of the structure of the film, that it seems aliuostcertain…
Physics · Lantern projection · Electric apparatus and appliances
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