Normal Arc Characteristic Curves: Dependence on Absolute Temperature of Anode

The equation V=A+(BIⁿ) for normal arc characteristic curves has been verified and the temperature range over which n has been found to be proportional to the absolute temperature of the boiling point of the anode material has been extended to include the zinc arc in argon at 1180^∘{}K with 0.345 for n and the tungsten arc in air at approximately 5100^∘{}K with $n=1.38$.