Experiments on electricity, : being an attempt to shew the advantage of elevated pointed conductors. / By Mr. Edward Nairne, F.R.S. Read at the Royal Society, June 18 and 25, 1778.

  • Edward Nairne
Date:
1779
Catalogue details

Licence: Public Domain Mark

Credit: Experiments on electricity, : being an attempt to shew the advantage of elevated pointed conductors. / By Mr. Edward Nairne, F.R.S. Read at the Royal Society, June 18 and 25, 1778. Source: Wellcome Collection.

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    and difcharging it on the point, as in the laft experiment, was now attracted down to the artificial cloud there re¬ maining, not ftriking to the point, or returning to it fo< long as the artificial cloud continued to be charged. D B S E R V A T I O N.:_ By the twenty-third experiment we fee,.that if our . cloud is fixed at a certain diftance between the arti¬ ficial cloud and the point, the fixed cloud, at the in- flant it receives the eledtric fpark, diredtly difcharges it again on the point. But in the twenty-fourth experi¬ ment, where there is no other alteration than making the cloud moveable on its axis, the diftances being exadtly the fame, the end of the cloud then recedes from the point and will not ftrike to it. This twenty-fourth expe¬ riment is much more agreeable to nature than the twenty-third, for clouds are not fixed but floating bodies. In order to fee the effedt of rods terminating with balls of different fizes, or terminating with a point, mov¬ ing fwiftly under my artificial cloud, I made ufe of the following apparatus. In fig. 7. h is a hollow tube of wood covered with tin- foil, with a heavy weight fattened to one end of this tube; and at about three inches above the weight was an /
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