Telegraphy and how to learn it; with brief chapters on elementary science, embracing various kinds of electricity, electrical measurements, thermo-frictional electricty, batteries, magnets and magnetism (1901)
Frederic, Wilson. [from old catalog] · Chicago, The Henneberry co · leaf 25
liberated, may go into combination.In the Grenet or bottle battery the hydro-gen is disposed of by chemical action. Thechemical action is quite com-plex, and will therefore beomitted. The liquid used is amixture of potassium bichro-mate and sulphuric acid dis-solved in water. The zincplate (Fig. 4)… … RATTERIE3. 23 rent f*r a short time, but the liquid soonbecomes exhausted. It is a very convenientbattery, for when not in use, we have onlyto draw the zinc out of the liquid by thebrass stem, and, on pushing the zinc backinto the liquid, action commences immedi-ately. It is well to allow the…
Telegraph
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