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 45
n overthe insulating tube, a re-mark here becomes ne-cessary on this diameter.Reference to Fig. 9 willshow that it is intendedthat the coils near thereel ends shall fit veryloosely on the tube T(Fig. i)—in fact, thatthere shall be a clearance of possiblyone-half inch in the extreme end,… … Fig. 9. Coil Construction, 19 the wood determining- the width of the in-dividual coil depends on the selection ofthe operator ; but the rule may be laiddown that the narrower the coils the bet-ter the insulation of the complete coil willbe on completion. One-sixteenth of an inch is a very,…
Induction coils · Radiography · X-rays
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