182 



Prof. E. Rutherford on the Magnetic and 



maximum value with no magnetic field is taken as 100. 

 These results are shown graphically in tig. 3. 



Magnetic field 





Kate of discharge 



tween pole- 



pieces. 





due to a rays. 











100 



3720 C.G.S. 



units 



66 



4810 







50 



6500 



j> 



5J 



33 



7360 



•)■> 



V 



23 



8370 



>y 



>? 



11 



The curve (fig. 3) shows that the amount deviated is 

 approximately proportional to the magnetic field. 



Fig. 3. 



90 



*5 40 

















/ 



A 















/ 



/ 















/ 



/ 















iffto 



/ 

















/ 

















/ 

















/ 



















































2000 S0C0 4000 5C0O 60C0 



Strength of Field, C.G.S. units. 



7000 



With another apparatus, with a mean air space of *055 cm., 

 the rays were completely deviated by a uniform magnetic field 

 of strength 8400 units extending over the length of the 

 plates, a distance of 15 cms. 



