Experiments and observations tending to illustrate the nature and properties of electricity. In one letter to Martin Folkes, Esq, President, and two to the Royal Society / by William Watson.

  • William Watson
Date:
1746
Catalogue details

Licence: Public Domain Mark

Credit: Experiments and observations tending to illustrate the nature and properties of electricity. In one letter to Martin Folkes, Esq, President, and two to the Royal Society / by William Watson. Source: Wellcome Collection.

    61/68 (page 53)
    [53] tom upwards, upon which are placed Books and feveral other Non-eledtrics; and that the Motions of the light Bo- dies underneath correfpond with the Motions of the Glafs Tube held over them, the Eledtricity feeming inftan- taneoufly to pafs through the Books and the Glafs. But this does not hap- pen, till the Ele&ricity has fully im- pregnated the Mon-eledrics, which lie upon the Glafs, which received Elee- tricity is ftopped by the Glafs; and then thefe Non-ejedrics dart their Power diretlly through the upper Part of the Glafs after the Manner of Origi- nally-eledtrics. But if the thinnefl Non-ele&ric, even the fineft Paper, as I before mentioned, is held in the Hand before f demonftrated, a Conduclor of Eiectricity: fecondiy •, As heat enlarges the Dimenfions of ali known Bodies, and confequendy caufes their con- ffituent Parts to recede from each other, the electri- cal Effluvia, paffing in ftraight Lines, find prob^- bly a more ready Paflage through their Pores, t 13*