Electrical Resistances of Metallic Wires. 



445 



Copper Wire. 



No. 4. 



1st Series. 



Resistance. 



U 

 



u 



c 

 u 



c 



IT 



c 

 u 

 c 

 u 

 c 

 u 

 c 

 u 







u 

 c 

 u 







u 



c 



U 



c 

 u 



c 

 u 

 c 

 u 

 c 

 u 

 c 

 u 







u 



•17762 

 59 

 78 

 75 

 88 

 85 

 97 

 94 



•17808 

 04 

 25 

 20 

 31 

 27 

 39 

 34 

 43 

 38 

 47 

 43 

 54 

 49 

 60 

 55 

 64 

 59 

 66 

 63 

 71 

 67 

 74 

 70 

 77 

 74 



•17880 



Difference. 



-•00003 

 4--00019 

 -•00003 

 + •00013 

 -•00003 

 + •00012 

 -•00003 

 + •00014 

 -00004 

 +•00021 

 -•00005 

 + •00011 

 -•00004 

 + •00012 

 -•00005 

 + •00009 

 -•00005 

 + •00009 

 -•00004 

 + •00011 

 -•00005 

 4- -00011 

 - -00005 

 +•00009 

 -•00005 

 + •00007 

 -•00003 

 + •00008 

 -•00004 

 + •00007 

 -•00004 

 + •00007 

 -•00003 

 + •00006 



Rested here 21 hours ; 

 gained by standing 

 •00002. 



2nd Series. 



Resistance. 



•17882 

 •17880 

 •17903 

 •17894 

 •17914 

 04 

 28 

 20 

 36 

 30 

 41 

 34 

 48 

 43 

 60 

 52 

 67 

 59 

 73 

 65 

 78 

 71 

 84 

 77 

 89 

 82 

 93 

 87 

 97 

 91 

 98 

 91 

 99 

 96 

 •18005 



Difference. 



-•00002 

 + •00023 

 -•00009 

 + •00020 

 -•00010 

 + •00024 

 -•00008 

 + •00016 

 -•00006 

 + •00011 

 -•00007 

 + •00014 

 -•00005 

 +•00017 

 -•00008 

 + •00015 

 -•00008 

 +•00014 

 -•00008 

 + •00013 

 -•00007 

 + •00013 

 -•00007 

 + •00012 

 -•00007 

 + 00011 

 -•00006 

 + •00010 

 -•00006 

 +•00007 

 - -00007 

 + •00008 

 -•00003 

 +•00009 



Rested here 21 hours ; 

 loss by standing 

 •00039. 



