Electrical Discharges between Coaxial Electrodes

  title={Electrical Discharges between Coaxial Electrodes},
  author={J. S. T. LOOMS},
LUMINOUS corona discharges occur when transient voltages, lasting about a microsecond, are applied between a wire and a small coaxially mounted ring in air. I have photographed these discharges and find that their shapes differ with the polarity of the electrodes. When the wire is made the negative electrode the discharge has the form of diffuse tufts, which are grouped around the wire into a roughly symmetrical brush; when positive, the discharge occurs in radial filaments (Figs. 1 and 2… CONTINUE READING