Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 86
s kept separate. This lepolarizer is placed on the marketin the form of crystals, known assulpho-chromic salt, made by theaction of sulphuric acid upontahromic acid. When dissolved, itsaction is similar to that of thechromic acid solution. After thecell has been set up with everythingelse in place… … Fig. 81-A.—Partz Cell. 68 PRACTICAL ELECTRICITY. rent weakens a few tablespoonfuls of the salt introducedthrough the tube will restore the current to its normal value.The cell should remain undisturbed to prevent the solutionfrom mixing. Its E. M. F. is from 1.9 to 2 volts, and the6 in. x 8 in.…
Electricity · Magnetism
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