Andrews, Ernest John, 1863-, Howland, Howard Newell, 1865- joint author · New York, London, The Macmillan company · leaf 443
38 LABORATORY MANUAL Experiment 44 … Resistance and its Effects. Apparatus. — A good cell; coils of Nos. 24 and 28 copper wire, 50and 100 ft. long, and a 50-ft. coil of No. 24 German-silver wire; acommutator or current reverser (R, Fig. 26) ; a tangent galvanometer. A tangent galvanometeris simply a circular rim ofwood with insulated…
Physics
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