Maximum TABLE XIII. LUMINOUS EFFECTS AND CREEPING DISCHARGE. Width of Electrostatic Corona, w = 27.5 (V— 2)2. Thickness in Milli of Potential Mica Disk Corona in Kilo-Volts in Faint bluish glow between electrodes, visible in the dark. Considerable bluish glow, faintly visible in broad daylight. Intense bluish glow; begins to send out short creepers of about .2 cm. length. |