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 40
polarize rapidly if kept long onclosed circuit. There are a great many dry cells with pastes of variousmodified compositions now on the market, and they haveproved themselves very convenient and effective. 22. How long will a dry cell last? The life of a dry cellis not a fixed quantity, but depends… … it is used. Oftentimes dry cells which are merely standing on a shelf for a year and not being used at all will dry up andbecome practically useless. Sometimes a bat-tery of 5 dry cells, such as would be used forgas-engine ignition, which is in pretty constantuse, will last a couple of months. The…
Electricity · Magnetism
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