the Anode in Vacuum- lubes. 

 Fig. 2. 



in 



. *><>* 





















t 











t 



'■28-n, 









tnesnjsj 













1 





tuAy 











t 





Secern d 















t 



k 



























SO-60 



mm 1 







x lo' 1 - 



















e^-o-o 















SSm-n 











/ 1 













+ 





/ 











/ 





,,,, 



/ 













0-4-/» 



- 



4 



// 

















!^^.<r~- ' 





> CU -rr^yi t :> 



1 1 







■001 -002 '003 -OOu. -COS -oOL -00} Q^f^. 



If, then, the results in Table I. are divided by the current 

 the average voltage fall per ion is obtained. This is given in 

 volts in the following table : — ■ 



Table V. 



1 i amps. 



•001 



•002 



•003 



•004 



•005 



•006 



•007 



Pressure. 

















(mm.). 

















3 80 



59 



37 



33 



31 



29 



33 



— 



3-08 



55 



37 



37 



33 



33 



33 



— 



j 2-25 



35 



36 



34 



33 



34 



35 



— 



150 



70 



69 



65 



65 



63 



60 



57 



1-33 



69 



64 



62 



62 



55 



58 



57 



1-21 



66 



60 



61 



59 



58 



58 



60 



1-10 



63 



58 



51 



54 



55 



54 



52 



1-00 



63 



55 



56 



50 



53 



52 



51 



j 0-81. 



56 



51 



51 



50 



50 



48 



50 



060 



49 



48 



45 



45 



44 



43 



40 



I 0-50 



48 



45 



40 



38 



29 



26 



18 



0-41 



3S 



35 



23 



12 



8 



10 



14 



0-35 



34 



8 



9 



11 



15 



20 



47 ( 



0-28 



12 



10 



20 



49 



115 | 







0-23 



27 



109 













0-18 



83 







| 



i 



1 



1 



i 



Phil. Mag. S. 6. Vol. 27. No. 157. Jan. 1914. 







