518 



TATE AND FOOTE : RESONANCE POTENTIALS 



6.56 X 10 ~ 27 erg sec.), 7 e the electronic charge, and V the poten- 

 tial necessary to give the electrons the resonating velocity. The 



o 



io 



<2 4- 6 <3 



Accelerating 'Potential ( Volts ) 



Fig. 1. Variation with accelerating potential of current to outside cylinder. 

 'Coblentz. Bull. Bur. Stds., 13:470. 1916. 



