An essay on the history, practice, and theory of electricity / [John Bywater].

  • Bywater, John
Date:
1810
Catalogue details

Licence: Public Domain Mark

Credit: An essay on the history, practice, and theory of electricity / [John Bywater]. Source: Wellcome Collection.

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    meet in the middle of the circuit, an explosion of the whole charge immediately took place ; the length of the circuit used by Mr, Atwood was about 12 feet. Mr. Symmer passed several powerful charges through, a quire of paper, and always found the edges of the paper, round the perforation, bent in opposite directions from the centre* “ In the middle of a paper book, of the thick¬ ness of a quire, Mr. Symmer put a slip of tin-foil; and in another, of the same thickness, he put two slips of the same sort of foil, including the two middle leaves of the book between them ; upon striking the two different books the effects were answerable to what he expected : in the first, the leaves on each side of the foil were pierced, while the foil itself remained unpierced ; but, at the same time, he could perceive an impression had been made on each of its surfaces, at a little dis¬ tance from one another, and such impressions were still more visible on the paper, and might be traced as pointing different ways. In the second, all the leaves of the book were pierced, excepting the two that were between the strip of foil; and in these two, instead of holes, the two impressions, in contrary directions, were visible.