Modern Practice of the Electric Telegraph: A Technical Handbook for Electricians, Managers, and Operators, with 185 IllustrationsD. Van Nostrand Company, 1891 - 234 стор. Magnetismus, Elektromagnetismus ; Elektrotechnik ; Telegrafie (Nachrichtentechnik). |
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Загальні терміни та фрази
action adjusted ampères ance apparatus armature artificial line battery brass centimetre closed coil conductor connected contact-points convenient copper plate copper wire core Daniell cell deflection diagram diameter direction distant end distant station dots duplex dynamo Dynamo-Electric earth effect electric current electric telegraph electro-magnet electromotive force employed equal gauge glass ground helix hence Illustrated imperfect insulation insulation key K¹ leaky line length lever line-wire lines of force loop magnetic field measured megohms metallic miles negative neutral relay number of cells number of turns Ohm's law ohms operator pegs placed polar relay pole position practice principle produced proportion Quadruplex quantity of current ratio rheostat s. c. solution screws sections shown in Fig shunt signals single-current sounder strength switch Tangent Galvanometer telegraph line telegraphic circuit termed terminal station thick tion transmitting unit usually vertical voltaic volts Western Union Wheatstone Bridge zinc zinc plate
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