Abstract :
THIS INSTRUMENT was designed and built in an attempt to obtain an absolute low-voltage standard of corona. It consists of a three-inch-long coaxial cylindrical electrode system, the center conductor of which is a 0.013-inch stain-less-steel wire. The outer conductor consists of a brass cylinder accurately drilled and finished bored on a lathe to 0.1505 inch diameter. The concentricity of the wire is accurately established by capacitance measurements.
