brush discharge(redirected from brush discharges)
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A faintly visible, relatively slow crackling discharge of electricity without sparking.
(General Physics) a slightly luminous electrical discharge between points of high charge density when the charge density is insufficient to cause a spark or around sharp points on a highly charged conductor because of ionization of air molecules in their vicinity
a type of corona discharge that takes place between two electrodes at atmospheric pressure, characterized by long, branched, luminous streamers of ionized particles.