138 Mr. C. Binks on Electricity, 



Section V. 

 To determine the comparative amount of action in any 

 single voltaic arrangement when its plates are placed at dif- 

 ferent distances from one another. 



83. The two plates of a voltaic couple may be either of an 

 equal size, or unequal, and the difference in size which may 

 exist between the two is unlimited. 



The couple itself, considered as a couple, may either be 

 large or small also, to an unlimited extent. 



The distance between the two plates of any couple, what- 

 ever its size, or whatever the relative proportions of the plates, 

 may also be varied without limitation. 



The acid mixtures also, in which any voltaic couple is made 

 to operate, may be of any required degree of strength. 



84. The immediate object in hand is to determine the ef- 

 fects of distance; but these must be sought for under every 

 possible condition of the arrangements as regards the size of 

 the couple used, the relative proportions of its plates, and 

 the strength of the exciting acid. 



To determine the law of distance when the two elementary 

 plates are of an equal size. 



85. (a). A voltaic couple having on each plate an entire 

 surface of 6 square inches, had its plates placed successively 

 at the distance from one another of \ of an inch, 4 inches, 

 and 24, and the quantity of hydrogen by measure, yielded in a 

 given time at each of these positions, was respectively equal to 



OA ea A cr. f lU 50ths of a 



84. 58 and 39 < , • • i 

 L cubic mch. 



86. {b). Another couple, exactly one half the size of the 

 last, yielded under precisely the same conditions the respect- 

 ive measures of 



An oi I oi rin50thsofa 

 46. 31 and 21 < u • • u 

 L cubic men. 



87. {c.) Another couple, one fourth the size of the first 



one, and placed under the same circumstances, yielded the 



numbers 



r,r. ,c, J lo r in like measures of 

 26. 18 and 12 < , , . ,, 



1^ hydrogen m the same time. 



88. These experiments determine that whatever may be 

 the size of the couple itself, its elementary plates being 

 equal, the influence of distance upon its action is the same. 



89. The total amount of action under condition a, at what- 

 ever position it is taken, greatly exceeds the total amount of 

 action under ^ or c: but the ratio of the difference between 



