An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 211
ch isused to correct the readings of the instrument. 128. Coulombmeter test of ammeter. The so-called stan-dard instruments are occasionally compared with the legalstandards at the National Bureau of Standards in Washington,D. C. By international agreement the quantity of electricitywhich deposits… … Fig. 114. — Silver cou-lombmeter. measurement of current by this method is called a coulomb-meter (sometimes called voltameter) and is shown in figure114. The anode is a silver disk S at the left, and the cathodeP is the platinum cup at the bottom. Aporous cup C at the right is put betweenthe anode…
Electricity · Magnetism
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