140 Prof. E. Rutherford on Uranium Radiation and 



the capacity of the electrometer circuit with movement of the 

 plates. 



Distance between 

 plates. 



Hate of leak in scale-divisions per min. 



752 mm. 



376 mm. 187 mm. 



mm. 



2-5 



41 



21 





5 



70 



40 



20 



7-5 



92 



53 



10 



109 



65 36 



125 



123 



76 





15 



128 



83 



47 



The results are shown graphically in fig. 8, where the 



Fie-. 8. 



abscissae represent distances between the plates and the ordi- 

 nates rates of leak. The values given above correspond to 

 saturation rates of leak ; for 200 volts between the plates is 



