Investigation of the Simple Coherer. 

 Table VII. 



277 



CO. Circuit open. CD. Current direct. C.R. Current 

 reversed. 



Circuit. 



Making of Contact. 



E.T. 



E.C 



Voltmeter. 



One spark CO. 







2000 





CD. 



Make once. 



2600 



2600 



035 



CD. 







2600 



1-42 



CD. 







2600 





CD. 







2300 



0-45 



CD. 



J} 





2600 





CD. 



} , 





2000 



0-45 



CD. 



„ 





2600 





C.R. 



,, 





1000 



0-9 hover. 



CE. 







1000 





CE. 







2600 



1-42 



CE. 





„ 



2600 





CE. 





,. 



2600 



1-42 



CD. 











CD. 





„ 







CD. 



Made often. 









CD. 



tt 









CD. 



" 



" 





" 



Table VIII. 



Circuit. 



Making of Contact, 



E.T. 



E.C 



Voltmeter. 



One spark CO. 





2600 



2000 





CO. 







2600 





CD. 



Make once. 





2600 



0*5 hover. 



CD. 



,, 





2600 



0-7 hover. 



CE. 



5> 





1500 





CE. 







2600 



1-42 



CD. 



„ 





2600 



" 



CD. 



)f 





2600 





CE. 



,, 





1600 



1-38 



CE, 







2600 





CD. 



,, 





1600 



1-35 



CD. 



>> 





2600 



1-42 



CE. 



55 







}) 



CE. 



>> 





n 



)? 



CD. 



5J 









CD. 







„ 





CE, 



?J 





1600 



0-6 



CE. 



)f 





2600 



1-42 



CD. 



f 





5J 



n 



CE. 



}f 







}} 



CD. 



,, 





„ 



? " 



CE. 



" 



" 



" 



" 



The two curves show that reversing the current, especiallv 

 putting Reverse (R) after Direct (D), causes a most pro- 



