1908] 



on the Carriers of Positive Electricity. 



lib 



From these equations the following determinations of e/m and v 

 were made : the value of V was 420 volts. 



The other type of tube (Fig. 2), in which there were no auxiliary 

 electrodes, had the following dimensions : — 



Distance between the plates L and M . = • 4 cm. 



Length of plates =4*0 cm. 



Distance between screen and plate . . = ^>*5 cm. 



Fig. 2. 



Hence if Y is the potential-difference in volts between the plates^ 

 and D, as before, the deflexion in the electrostatic field, 

 e D 



mv- 



5-5 X lo^y* 



