384 Dr. Barton and Mr. Lownds on Reflexion and 

 Table VI. — Interference System for Medium Condenser 



Electrometer-Throws, d, 









without Condenser on. 



Condenser on .Line. 



d' 









of Throws 

















Distances, l,„ 



with and 



Actual 



Interpolated 



Electrometer 



of Condenser 



without 



Throws. 



Means. 



Throws, d'. 



beyond 



Condenser. 





36 5 





Electrometer. 





37 



22 



m. 

 075 



0-60 



36 



33 



36 



1-0 



1-09 



30 



32 



73 



1-5 



2-28 



34 



33-5 



105 



20 



313 



33 



32-5 



115 



2-5 



3-54 



32 



32 



113 



30 



353 



32 



34 



75 



35 



2 ,;, 1 



36 



345 



51 



4-0 



1-48 



33 



30'5 



35 



4-5 



1-15 



28 



30-5 



32 



50 



1-05 



33 



34 - 5 



82 



6-25 



2-38 



36 



34-5 



85 



7-0 



2-46 



33 



32-5 



70 



7 - 5 



215 



32 



335 



54 



8-0 



1-61 



35 











Fig. 8.— Experimental Results. Interference System for Medium Con- 

 denser. The several sets of readings are respectively indicated by 

 ', o ? f, and X . 



S 



Z 5 4 S 6 t 



Distances of Condenser beyond Electrometer. 



8 •«* 



59. Small Condenser. — Disks 5 centim. radius and placed 

 1 centim. apart. 



(i.) Transmitted System. For this arrangement the set of 

 41 readings shown in Table VII. was taken. These readings 

 yield the result 



y= % =0-868. 



J d 



(52) 



