Electrical Wave or Current through a Metallic Circuit, 289 



From a comparison of these values we obtain — 



s 

 No. 1, long circuit .... =0*04<58 

 No. 2, short circuit .... = 0*0254) 



Wave time on 607 miles of wire = 0-0204< 



No. 1 =0-04.58 



No. 4- =0-0249 



Wave time =00209 



No. 3 =0-0468 



No. 2 =0-0254 



Wave time =0-0214 



No. 3 =0-0468 



No. 4 =00249 



Wave time =0-0219 



No. 5 =0-0467 



No. 2 =0-0254 



Wave time =0-0213 



- No. 5 =0-0467 



No. 4 . . . =0-0249 



Wave time =0*0218 



Wave time on 607 miles of wire, as deduced from — 



s 

 No. 1- No. 2 = 0-0204 

 No. 1 — No. 4 = 0-0209 

 No. 3 — No. 2=0*0214 

 No. 3 -No. 4 = 0*0219 

 No. 5 — No. 2 = 0-02 13 

 No. 5 — No. 4 = 0-0218 



Mean =0*02128 

 s 

 Mean + No. I = 0*00088 

 Mean + No. 2 = 0*00038 

 Mean + No. 3 = 0-00014 

 Mean + No. 4 = 0-00064 

 Mean + No. 5 = 0-00002 

 Mean + No. 6 = 0*00052 



Mean = 0*00043 



That is, the mean difference from the mean amounts to 43 

 hundred-thousandths of a second of time. 



The velocity deduced along the wires, in case the circuit is 

 607 miles in length, is 28524 miles per second. 



At some future time I hope to resume these investigations. 

 It would be interesting to repeat these experiments at differ- 



