Trebel, George. [from old catalog] · New York, F. Tousey · leaf 44
move up tothe magnet, this force of attraction will do a certain amountof work. Take now another piece of iron similar to the first;this also will be attracted, and a certain amount of work willbe performed, but a less amount than that done in the firstinstance. Continue the operation until the… … quire an expenditure of external work exactly equal to thatoriginally performed by the magnet. Thus far we have seen how currents of electricity are produced^and how they are converted into magnetism. Now we willendeavor to explain how magnetism may be converted intoelectricity. In this fact alone…
Electricity
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