A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 1017
ence it is necessary that this should take place when there is no.m.f. in the coil, or else the short circuiting will mean a big currenta it, with consequent heating of the coil and sparking when theircuit is broken an instant later. If the magnetic field in which 992 MAGNETISM AND ELECTRICITY…
Physics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.