Experimental science. Elementary, practical and experimental physics (1890)
Hopkins, George M. (George Milton), 1842-1902 · New York, Munn & co. · leaf 444
hirty hours. It is then discharged througha resistance of 20 or 30 ohms, and again recharged, theconnections with the dynamos being reversed so as to sendthe current through the battery in the opposite direction.The battery is again discharged through the resistance, andagain recharged in a reverse… … Complete Cell. 422 EXPERIMENTAL SCIENCE. be connected with the dynamo as connected last in charging.Although amateurs may find pleasure in constructingand forming a secondary battery, there is no economy insecuring a battery in this way. It is less expensive and lessvexatious to purchase from…
Physics · Lantern projection · Electric apparatus and appliances
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![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-163-99.webp)
