Prof. E. Rutherford on a Radio-active 



Table III. 



Potential-difference 100 volts. 



Time in Seconds. 







28 



Current. 



62 



•51 



118 



•23 



155 



14 



210 



•067 



272 



•041 



260 



1 



•01S 



Fig. 2. 



Fig. 2, curve A, shows the relation existing between the 

 current through the gas and the time. The current, just 

 before the flow of air is stopped, is taken as unity. It will be 

 observed that the current through the gas diminishes in a 

 geometrical progression with the time. It can easily be shown, 



