Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 536
f electriclighting, the light is produced by the incandescence of aslender pencil of carbon and by a small voltaic arc between DYNAMIC ELECTRICITY. 513 the end of the pencil and the carbon block forming one ofthe electrodes. In the Reynier system the carbon block isin the form of a wheel that… … Simple Electric Lamp. simple weight or of the parts of the lamp and the pencil;and Mr. Reynier, in a recent description of his lamp, pro-poses to employ hydrostatic pressure as a means of carry-ing forward the pencil. This principle has been appliedto feeding carbons in several forms of electric…
Physics · Lantern projection · Electric apparatus and appliances
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