Inside Out Library
The principles underlying radio communication (1922)
United States. National Bureau of Standards, Ould, Richard Sheldon, 1889-, United States. Army. Signal Corps · Washington, Govt. Print. Off. · leaf 76
ectrolyte into the tube. The specific gravity of the electrolyteis ascertained by the position in which the hydrometer floats.For many types of portable batteries the cell is considered dis-charged when the specific gravity has fallen to 1.140. The nickel-iron cells have an open-circuit voltage… … Co>{>ar wireCall &over Stuffing bo*Qland nn^Stuffing box &»sKetWeld t© cover5bocin£, washerConnecting rodPositive ^ridQrid aeb^nator5e*mie;»3 •stool rirfes > tyjbe* -~<5u<&kenaion b©A* Fig. 30.—Storage cell of nickel-iron type having alkaline electrolyte. Ivoltage falls…Telegraph, Wireless · Radio
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