in the Charyiny of a Condenser. 397 



Table III. (See also diagram 2.) 

 Paraffin Condenser (normal charge =2*044 microcoulombs). 



Observation 

 number. 



+ 0-3 

 +0-2 



+ 0-1 







-O'l 



-0-2 



-o- 



1 



2 

 3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



Diameter of Sphere, 



S 2 =0 - 49 centim. 



Charge of 



Deviation 



Condenser. 



from the 



Micro- 



normal | 



coulombs. 



charge. 



2020 



-0-024 ! 



1-808 



-0-236 



1-871 



-0-173 



1969 



-0075 ! 



1-890 



-0-154 j 



1-977 



-0 067 



2-098 



+0054 ; 



1-887 



-0137 



1-890 



-0154 



1-987 



-0 057 



1-829 



-0-215 



1-942 



-0-102 



1-813 



-0231 



2-094 



+0-050 



1-839 



-0-205 



1-843 



-0-201 



2096 



+0 052 



2 041 



-0-003 



1-832 



-0-212 



1-925 



-0-119 



Diameter of Sphere, 



Charge of 

 Condenser. 



Micro- 

 coulombs. 



•921 



•877 

 •892 

 ■845 

 •890 

 •859 

 •868 

 •930 

 •868 

 •886 

 863 

 •885 

 •905 

 •895 

 •900 

 •843 

 •902 

 •914 

 •934 

 •853 



Deviation 

 from the 

 normal 

 charge. 



-0-123 

 -0167 

 -0-152 

 -0-199 

 -0-154 

 -0-185 

 -0176 

 -0114 

 -0176 

 -0-158 

 -0181 

 -0159 

 -0139 

 -0149 

 -0-144 

 -0-201 

 -0142 

 -0130 

 -0110 

 -0191 



Diameter of Sphere, 



S 2 = 2-16 centim. 



Charge of 



Deviation 



Condenser. 



from the 



Micro- 



normal 



coulombs. 



charge. 



1915 



-0-129 



1-922 



-0122 



1-914 



-0130 



1-915 



-0 129 



1-906 



-0-138 



1915 



-0129 



1-915 



-0129 



1-912 



-0132 



1-916 



-0-128 



1-915 



-0-129 



1-916 



-0128 



1-928 



-0116 



1-915 



-0129 



1-924 



-0120 



1-914 



-0130 



1-915 



-0-129 



1-917 



-0-127 



1-906 



-0138 



1-915 



-0129 



1914 



-0-130 



Diagram 2. (See Tables II. and III.) 



Mica Condenser. Paraffin Condenser. 

 Twenty consecutive determinations. Twenty consecutive determinations. 

































































































+ ....+ Time of charging least. 



x • • • • X „ „ intermediate. 



© © „ -„ greatest. 



An inspection of Tables II. and III. and of the graphical 

 representation of these observations given in diagram 2, shows 

 that when the diameter of the sphere S 2 , and consequently 

 the time during which the condenser receives a charge, is 

 increased, the variations in the charge rapidly diminish. 



