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 27
, by de-composition and recomposi-tion. The sulphuric acidpasses through the porouspartition and immediatelyenters into chemical actionwith the nitric acid, so that none reachesthe carbon. There are produced by thisaction, water—which in time dilutes theacid—and orange-colored fumes of nitricoxide,… … BATTERIES. 25 fumes are almost entirely prevented. Strongsulphuric acid will not answer in any bat-tery. Usually, to one part of sulphuricacid about 12 parts by weight or 20 by vol-ume of water are added to dissolve the sul-phate of zinc formed, zinc sulphate not be-ing dissolved by strong…
Telegraph
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