1. galvanometer, aperiodic A galvanometer whose needle is damped (see Damping) as, for instance, by the proximity of a plate of metal, by an air vane or otherwise, so that it reaches its reading with hardly any oscillation. A very lightneedle and a strong magnetic field also conduce to vibrations of shortperioddying out very quickly. Such galvanometers are termed "dead-beat." No instrument is absolutely dead-beat, only relatively so.
Definitions of galvanometer, aperiodic
