334 



Resistance of Copper Wire 

 1-65 _ 



2 



1-8 



= '9 



^=55 



U . .65 



1-6 



= 8 



14-5 



2 



12-5 



= 7-25 



= 6-25 



2 = 8 ' 25 



372 



- 74 



21-75 



= 7-25 



646] 74 of sat. sol. in tube 17 is equivalent to 29,623 inches of copper wire, 

 9-984 inches of which = i grain. 



7-25 of sat. sol. in do. = 62,790 of copper wire, 10-93 of which = i grain*. 



[Length of 

 wire 



29,623 

 62,790 



Resistance of pure copper 



calculated from Matthiessen 



annealed hard drawn 



Resistance of saturated 



solution in tube 17 



calculated from 



Kohlrausch 



424 

 984 



433 

 1004 



413 

 4046] 



