A Handbook of Practical TelegraphyLongmans, Green, Reader, and Dyer, 1874 - 443 pages |
Common terms and phrases
acid action adjusted apparatus armature arranged attracted battery contact cable cause charge coating condenser conducting conductor connected copper sulphate core Crown 8vo current passes Daniell cell dash deflection diameter direction disc discharge disconnected distance distant end distant station divided double ebonite Edition effect electricity electro-magnet electromotive force electroscope equal fault fixed galvano galvanometer greater gutta-percha inches increased instrument insulation iron joint knot leakage length lever Leyden jar line wire line-wire local battery Logarithm loop magnet marking current metal method mile millimetres mils Morse move needle number of cells obtained ohms opposite ordinary percha placed plates polarity pole portion position produced proportion put to earth R. A. Proctor receiving relay resistance coils reversed rheostat screw sending short circuit shunt side signals soldered solution span speed strain surface switch telegraph temperature terminal terminal stations tion trough Woodcuts zinc zinc sulphate
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