Electrical and scientific instruments and apparatus : november 20th, 1899 (1899)
Elmer G. Willyoung & Co · New York : E.G. Willyoung · leaf 69
It is best to employ Standard Cells in connection witha zero method, like the potentiometer methods, later to be discussed,which allows no current to flow. In any case one should never he usedexcept with at least 10000 ohms extra resistance in series with it. Tlie DanielJ Cell. This well-known… … Fig. 68. D.ANiELL Standard Cell. The zinc jjlate must be chemically pure and freshly amalgamated; awire is soldered to it, covered with a glass tube, and passes up through tlieliquids. The jar is filled about half full with a solution (density 1.2 @ 15°C) of chemically pure ZnS04 in diatilled water…
Electric apparatus and appliances · Equipment and supplies
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