Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 534
ed. In thiscase the coils will have to be longer. Eisenlohrs column of resistance, shown in Fig. 498, ismexpensive and very convenient. It consists of a cylinderof mahogany or other compact wood, having six or moregrooves cut in it. The cylinder is saturated with parafifineor varnished with… … Resistance Column with some force upon the bands. Covered wire of a knownresistance is wound in these grooves, the shortest lengthcontaining the given unit once or an even number of times.The length of the coils of wire in the successive grof>vesincreases from i to 6; the ends of each wire are…
Physics · Lantern projection · Electric apparatus and appliances
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
