164 



Prof. J. C. Bose. On the Continuity of [Apr. 18, 



there we have partial recovery between quickly recurring flashes, and 

 there is thus observed a fluctuation about the balanced position. Now 



- 

























(C) 



\ 























<h 











I 





\ 





















til 









\ 





x 

















\ 





If 







|^ 

















4/ 



















I 











If 





i 







1 

















\ 





























H 







































\ 













> — 







































-id'-* 

















Time. 









i/WV 





^ — ~ 





(d) 













Twvi 











































































































I— 





















\ 

























t 





















4 











































































+-15"-+ 



















77/776. 



p I<3 .. 5, — Variation of resistance (deduced from diminution of galvanometer 

 deflection) in Ag' receiver produced by electric radiation lasting from 15". 

 Distance of radiation in (a) = 40 cm. ; in (b) = 25 cm. ; and in (c) = 15 cm. 

 In (d) is given a series of curves taken after half an hour with the radiator at 

 a distance of 15 cm. The numbers on the left side of the upper curve indicate 

 the absolute value of resistance. 



when the intensity of radiation is increased by decreasing the distance 

 of the radiator to 25 cm. (see b), the strain effect persists for a little 

 longer time, and the flashes arrive before the substance can recover to 

 any extent; thus there is less fluctuation in the balanced position. 



