Modern electricity and magnetism, theoretically and practically considered (1885)
Avery, Elroy M[cKendree], 1844- [from old catalog] · New York and Chicago, Sheldon and company · leaf 65
hen the machine is vigorously worked in thedark, the apparently continuous discharge intothe air produces a luminous appearance at theends of the conductor. This appearance, knownas a brush, may be improved by holding a large,smooth, metal globe at a distance a little too greatfor the passage of a… … Fig. 154. 362. The Disruptive Discharge.—A dischargeof electricity taking place suddenly through a non-con-ductor is called a disruptive discharge, e.g., the spark andbrush drawn from an electric machine in action. Theglow is either a continuous discharge or one of exceed-ingly small period.…
Electricity · Magnetism
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