Modern Practice of the Electric Telegraph: A Handbook for Electricians and OperatorsD. Van Nostrand, 1872 - 160 ページ |
多く使われている語句
acid action adjusted annealed apparatus armature arranged attached binding screws button Callaud Carbon cells Chatterton's compound Cloth conducting conductor construction copper wire cuit Daniell Daniell cells dashes deflection diameter difference direction distance distant end dots earth effect Electric Telegraph electricity electro-magnet electro-motive force employed equal escape Fahr fault follows formula galvanometer gauge Grove battery gutta-percha Hypsometry inches increased instrument insulation J. B. Stearns joint resistance known resistance latter length lever lightning arrester line of tension line wire local battery loop main battery main circuit measure metallic method Morse needle number of convolutions ohms operator opposite ordinary placed plate platina porous cup portion position practice principle proportion pure copper relay magnet repeater represented resistance coils rheostat shown in fig signals solution sounder station statute mile sulphate switch tangent telegraph line terminal station tery testing tion total resistance type wheel versine zero zinc
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