Observations on a series of electrical experiments / By Dr. Hoadly, and Mr. Wilson.

  • Benjamin Hoadly
Date:
1759
Catalogue details

Licence: Public Domain Mark

Credit: Observations on a series of electrical experiments / By Dr. Hoadly, and Mr. Wilson. Source: Wellcome Collection.

    32/96 page 28
    [ *3 ] the brafs end of the tube, as before, and difappears again after fome little time. * In this experiment there is the ftrongeft appearance of the eledlrical fluid’s fhifting its place in order to pre¬ fer ve the equilibrium, by flowing immediately, when any force is offered to the outer furface, from its inner furface through the vacuum, and darting diredtly to the metal and hand, where it finds the refinance to its efcape is the weakeft. Now though the refiflance is weakeft, where the brafs and hand is applied to the glafs $ yet there is a re- fiftance; and confequently, the eledlrical fluid in the vacuum muft have fome additional force given to it from that of the inner furface of the glafs which is neareft to the excited tube, /. e. muft be condenfed till it acquires a power fufficient to overcome the refiftance of the brafs, &c. But this fluid within the exhaufted tube cannot be condenfed, without more pafies into it immediately from that inner furface, and confequently fo long as the eledlrical fluid is continually flowing from it into the vacuum, and fo into the brafs, -&c. fo long will it be lofing its natural quantity, unlefs its lofs of this fluid be fupplied by a flow of more from the excited tube, I fhall now, therefore, endeavour to fhew, that the lofs of the eledlrical fluid flowing from the inner fur- * Mr. f. Canton has taken notice of this vanifhing and returning of the light in the fame experiment, referred to in page io. face
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