1248 Mr. Norman Shaw on Charged Surface Layers in 



©n we have one at V 2 + r/, 2 , where (V 2 + a 2 ) — ( V\ 4- %) = P, 

 the contact potential as defined in the usual way. The states 

 of the metals, and their layers before and after each of the 

 three cases, are expressed with this notation in Table II. 



Fijr. 3. 



fO-550 



0-000 



15 30 45 60 75 90 105 l?0 135 150 165 



Table II. 



195 £10 e?5 £4-0 SECONDS 





Potential 



at start 



of (a). 



Potential 

 at end 

 of (a). 



Potential 



at start 



of (b). 



Potential 

 at end 

 of (6) , 



Potential 



at start 



of (c). 



Potential 

 at end 



of (<•). 



Brass ... 



v\ 



v x 



V, + P 



V,+P 



V; 



v, 



Layer on 

 brass. 



Vi+«i 



Vx+Oj 



v\ f ^ 



V 1 +« l +P 



V. + f^ + P 



( = V 2 -P 



Layer on 

 Plate O. 



(=V 2 +a a ) 



(=V 2 +a2-P)| 



(=V 2 -P) 



V\+« t 

 (=V 2 +a 2 -P) 



(=v a +« 2 ) 



V 1 +« 1 +P 

 (=V a +a 2 ) 



Plate C . 



(=V 2 ) 



(=V 2 -P) 



V^^-^+P 

 (=V 2 ) 



V 1 +e 1 _a 2 +P 

 (=V a ) 



