Electricity for public schools and colleges (1891)
Larden, W. (Walter), b. 1855 or 6 · London : Longmans · leaf 444
strike the bell ,and the circuit is broken at the placewhere the spring C touched the keepera. The current ceases, and with it themagnetism. Hence the keeper a is nolonger attracted ; and so, acted uponby the spring to which it is attached,it flies back again and makes contactonce more with C. The… … tlL
Electricity
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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