Encyclopaedia Britannica, 11th Edition, Slice 9 Volume 8

Encyclopaedia Britannica, 11th Edition, Slice 9 Volume 8

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Excerpt: ...its mere resistance. Even when the current is fairly steady, its exact significance is not easily stated. In the first place there is usually an appreciable E.M.F. between a plate and the earth in contact with it, and this E.M.F. may vary with the temperature and the dryness of the soil. Naturally one employs similar plates buried to the same depth at the two ends, but absolute identity and invariability of conditions can hardly be secured. In some cases, in short lines (8), there is reason to fear that plate E.M.F.show more

Product details

  • Paperback | 170 pages
  • 189 x 246 x 9mm | 313g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236733401
  • 9781236733405