Note 179 — Chapter X
Reading edition
It has been observed by Mr. Barlow, in England, and some eminent observers in Austria, that an electric current constantly traverses the wires of the electric telegraph wherever there are two earth connections.
Reading edition
It has been observed by Mr. Barlow, in England, and some eminent observers in Austria, that an electric current constantly traverses the wires of the electric telegraph wherever there are two earth connections.