﻿2CS 



Mr. W. Morris Jones : Frictional 



Table III. 



Ebonite. 



Negative electricity on ebonite when rubbed with 

 flannel, silk, and chamois leather. 



Diameter of specimen 1*2 cm. 



Frictional work 



Charge in E.S.U. wben rubbed with 



in joules. 



Flannel. 



Silk. 



Leather. 



•4885 



5-983 



2-834 



L575 



•9771 



7-558 



4-409 



2-519 



1-4655 



8-187 



5-668 



3-401 



1-9540 



8-502 



6-298 



3621 



2-4425 



8-943 



6-613 



3-968 



3-4195 



9-762 



7-090 



4031 



4-3965 



10077 



7-206 



4-220 



5-8620 



10-549 



7'558 



4-245 



7-8160 



10-833 



7-778 



4-219 



9-7710 



10-991 



7-841 



4-220 



12-2125 



11085 



7-868 



4346 



14-6550 



11-022 



7-872 



4-250 





Table IV. 







Amhe 







Negative electricity on amber when rubbed with 

 flannel, silk, and chamois leather. 



Frictional work 



Change in E.S.L T . when rubbed with 



in joules. 



Flannel. 



Silk. 



Leather. 



•4885 



6-928 



3-905 



2-204 



•9771 



8-439 



4-724 



2-992 



1-4655 



8-502 



5-479 



3-464 



1-9540 



8-817 



5-983 



3-779 



2-4425 



9-132 



6-298 



3-887 



3-4195 



9-321 



6-487 



4094 



4-3965 



9193 



6-613 



4-283 



5-8620 



9-257 



6-718 



4314 



7-8160 



9233 



6739 



4-345 



9-7710 



9-238 



6-723 



4-392 



12-2125 



9-269 



6-738 



4-440 



14-6550 



9-269 



6-770 



4-409 



