470 Prof. F. Horton on the Application of 1 hermionic 



Pressure of air, p = 5*32 mm. 

 Electric Intensity, X = 410 volts per cm. 



Distance 

 between plates, 



Observed 



current. 



21-5 



310 

 40-5 

 53-0 

 69-5 



Calculated 

 current. 



23-7 

 31-0 

 40-5 

 53-0 

 693 



Eatio of 



successive 



observed currents 



1-44 

 1-31 



1-31 

 1-31 



Pressure of air, p = 4'00 mm. 



Electric Intensity, X = 410 volts per cm. 



a = 4'09. 



•1 



18-4 



18-4 



153 



•2 



28-2 



27-7 



1-53 



•3 



43-0 



41-7 



1-49 



•4 



64-2 



62-8 



1-47 



•5 



94-5 



94-6 





Pressure of air, p = l'Sl mm. 



Electric Intensity, X = 410 volts per cm, 



u = 6'22. 



•1 



16-2 



16-2 



1-85 



•2 



30-0 



301 



1-83 



•3 



55 



56-1 



1-88 



•4 



103-5 



1046 



1-87 



•5 



193 



194 



1-89 



•6 



364 



363 





