Thin Metal Partition in a Voltameter. 



297 



Table V. {continued) . 



Influence of concentration upon the value of the Critical 

 Current, using a Gold-leaf partition : — 



Electrolyte. 



Concentration. 



Current. 



Current-density. 



H 2 S0 4 



100 per cent. ? 

 55 „ 

 43 „ 

 30 „ 

 22 „ 

 15 „ 



4 „ 



0-5 „ 



055 

 4-5 

 8-0 

 10-0 

 8-0 

 6-0 

 1-8 

 0-23 



031 

 2-57 

 4-57 

 5-71 

 4-57 

 343 

 103 

 013 

















Using a 30 per cent, solution of H 2 S0 4 , Pt partitions were 

 used and gave the following values for the Critical 

 Current : — 



Pt partition. 



Current. 



Current-density. 



000333 



00050 



002 



0090 



0002 



Weakest current. 



0051 

 00011 



To test the influence of very small holes in the specimens 

 used as partitions, the 0'02 millim. Pt partition was punc- 

 tured successively with 1, 2, 3, and 4 holes, each 0*5 millim. 

 in diameter. This gave the following values for its Critical 

 Current : — 



Partition. 



Current. 



Current-density. 



One hole 



007 

 013 

 020 

 0-27 



0-04 

 0-07 

 0115 

 0-154 



Two holes 



Three „ 



Four „ 





