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 18
amed Dufay and an Englishman named Symmerconsidered electricity to be composed of two fluids which werecontained in neutral bodies in equal amounts. When by anymeans this equality was disturbed in a body, electrical mani-festations occurred. These theories, and a large number that were… … Fig. 1. — Difference of level tends to make water flow. 4. Difference of level or potential. Suppose we have a watertank mounted beside the railroad track for filling the tank ofa locomotive tender, as shown in figure 1. It is evident atonce from our ordinary experience that the water will flow *…
Electricity · Magnetism
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