Meadowcroft, Wm. H. (William Henry), 1853- · New York : The American Technical Book Co · leaf 41
3* The A B C of the X Rays, … Fig the wire, and the needle will be observed to deflect. On revers-ing the polarity ofthe current the de-flection will be inthe opposite direc-tion. Supposing theobserver to be facingthe upper end of theconductor (Fig. 6),the direction of thelines of force will befrom left to right when the…
X-rays
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