Elementary telegraphy : a manual for students; written specially to meet the requirements of the ordinary grade of the subject as published in the syllabus of the city and guilds of London Institute (1910)
Pendry, H. W. (Henry Walter) · London ; New York : Whittaker & Co. · leaf 44
hen short- PRIMARY BATTERIES 33 circuit (/. c. join poles with very low resistance) the cellfor twenty-four hours. The chemical action of the cell with only water sup-jDlied in the outer compartment is modified and may berepresented as :— Zn + OHo + OH. II SO.Cu -|- SO^Cu + Cu= ZnO + H,0 + H,S04 II… … Fii:. 10.—Leclaiicli(> cell Ilildlls jiot. type, probably l)ecause there is no waste of materials whenthe cell is not actually at work, and it needs very littleattention when required only for occasional use. Its chiefdefect is lack of constancy if the cell is furnishing muchcurrent. In the…
Telegraph
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
