Austin, Louis W. (Louis Winslow), 1867-1932, Thwing, Charles B. (Charles Burton), 1860-1946, joint author · Boston, Allyn and Bacon · leaf 83
ngue of metal provided with anadjusting-screw, by means of whichthe tension of the suspending wiresmay be varied. These wires alsoserve to convey the current to thecoil. To increase the strength ofthe magnetic field, a piece of ironfastened to the bar supporting the coil is introducedinside the… … Fig. 28. ELECTRICITY AND MAGNETISM. 71
Physics
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