Easy electrical experiments and how to make them; (1918)
Dickinson, Leonard Perley, 1874- [from old catalog] · Chicago, F. J. Drake & co · leaf 46
owever, that the diameter of the circular chamberat the bottom of the magnet is exactly 2.y2 inches. Too muchcare cannot be exercised in making the iron conform to the rightshape and dimensions at this point. For this reason it is well to EASY ELECTRICAL EXPERIMENTS. 37 cut a circular disc from a… … FfT eio|od ...J **,.
Electric apparatus and appliances · Electricity
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