The practical telephone handbook and guide to the telephonic exchange (1906)
Poole, Joseph · New York, Macmillan Co. · leaf 52
and increases theresistance in the path of the current. This gas is furtherinstrumental in giving rise to opposition to the original current,by taking part in the production of an E.M.F., which tends tosend another current in the opposite direction, so that theE.M.F. of the cell falls, and the… … Fie. 15 30 PRACTICAL TELEPHONE HANDBOOK into chemical combination with the gas. and thus prevent itsdeposition. Local Action.—As before stated, the metals (generally zinc),used in galvanic cells should be pure, as if they are not, chemicalaction will go on even though the plates are not…
Telephone
Internet Archive · Northeastern University Library · Public Domain Mark 1.0. Free to use for anything.
