Induction coils : how to make, use, and repair them including Ruhmkorff, Tesla, and medical coils, Roentgen radiography, wireless telegraphy, and practical information on primary and secondary battery (1901)
Schneider, Norman H. (Norman Hugh) · New York : Spon & Chamberlain ; London : E. & F.N. Spon · leaf 188
t ofrotation, and upon the current being turnedon to the tubes, a simple triangle will re-sult, but at a certain stage of rotation theMaltese cross shown is formed. A stillhigher rate of rotation will produce the Rotating Effects. i6i double star, Fig. 54, and as the rotation andrate of vibration… … FiG. 53. Fig. 54. tions, a very pretty and simple effect canbe obtained with it as follows : Threestrips of looking-glass are cut and scratchedacross their silvered surface, as describedfor the luminous pane, Fig. 37. The cur-rent then being allowed to pass, and thewheel being rotated, the triangle…
Induction coils · Radiography · X-rays
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