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.

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    • [ 4S ] formsKaysround theCenterof theSeed: Or if you faften inany of thefe Seeds with Mucilage of Gura Arabie, round a Bit of Stick, the Dovvn of them when electrified, which othervvife hangs from the Stick, is raifed up, and forms a cir- cular Appearance round the Stick. As thefe light Bodies are diredled in their Motions, only by the Force impreffed upon them; and as their Appearance is conftantly radiatim, fuch Appearance by no Means fquares with our Idea of a Vortex. Some have imagined a Po- larity alfo, when they have obferved one end of an excited Glafs Tube re- pel light Subftances, and the other at- tradt them. But this is a Deception, arifing from the whole Length of the Tube not being excited, but only fuch Part of it as has been rubbed ; fo that as much of the Tube as is held in the Hand, remains in an unexcited State,- and permits light Subftances to lie ftill thereon, though forcibly repelFd at the