International Library of Technology · Scranton, International Textbook Co. · leaf 192
e tube/ absorbing moisture from theair, which would introduce anerror. The second form of appa-ratus illustrated is more diffi-cult to make. The joints ats^ and s^ are ground to fit,and wires to the electrodes are sealed into the sides of thetube T. As pure water has an extremely high resistance… … Fig. 994. ELECTRICAL MEASUREMENTS. 1627 2495. To measure current with this apparatus, thetube T should be filled with acidulated water, and the tube twith asbestos soaked in sulphuric acid. With the cork c inplace, carefully weigh the whole apparatus. Then join theterminals of the apparatus to the…
Electrical engineering
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