International Library of Technology · Scranton, International Textbook Co. · leaf 116
2) with the helix pulled out to twice its originallength, (a) Is there any difference between the deflectionsin the two cases ? [b) How much ? (c) Why ? Experiment 20.—(Arts. 2383 and 2393.) Make ahelix of about 30 turns and about the same diameter as 1550 PRINCIPLES OF before. Stretch it out until…
Electrical engineering
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