Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 358
d which the medium is unable to resistthe stress exerted on it, and a sudden discharge occurs,accompanied by a flash of light and a cracking noise. Influids the rupture produced by the discharge is self-healing,but in solids the break is, of course, permanent. Leydenjars are frequently spoiled by… … Fig. 218, from a straight line, assuming the characteristic broken ap-pearance of the lightning flash. The explanation is thatthe fracture follows the line of least resistance, its positionprobaWy being determined by the presence of dust in the air,much as a piece of paper when torn in two breaks…
Physics
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