Electricity and magnetism for advanced students (1920)
Starling, Sydney George, 1873- · London Longmans, Green · leaf 266
ink at a constant rate., and it■will be seen from the diagram that theshrinkage from 0^ to O2 takes place inhalf a vibration. If there were nodamping, the amplitude would all thetime have been 0 = OA; and sincethe impulse was given to the system Avhen in its middle position, that is the position… … 61 __ 62 and for a whole vibration ^ = e^^, and so on, the shrinkage beingproportional to the powe}:^f e; and hence for a quarter vibration it is ^y-y Therefore -^- = ^Since d must always be nearly equal to unity for a ballistic 256 ELECTRICITY AND MAGNETISM CHAP galvanometer, X is always very…
Electricity · Magnetism
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