378 Ratio of Electromagnetic to Electrostatic Unit. [Mar. 27, 



Second Set. 



64 443043 



48 443-097 



32 443-378 



80 442-950 



64 443-686 



55 443-766 



48 443378 



32 443 646 



16 443-672 



80 443-163 



Mean, 443 377. 



Third Set. 



64 443-369 



32 443-257 



48 433-770 



80 443-530 



55 443-835 



64 443-401 



Mean, 443'527. 



The mean of all the observations = 443*454 X 10~ 21 . 

 The means of the observations for different speeds are given in the 

 following table : — 



!N umber of times the 

 condenser is charged 



per second. Capacity x 10 21 . 



80 443-275 



64 443-370 



55 443-693 



48 443-442 



42 443-443 



32 443463 



16 443672 



These agree very well together, the greatest difference being about 

 one part in 1,000. 



Taking 443-454 x 10 -21 as the electromagnetic measure of the 

 capacity, the value of " v " is 299 '58. 



