Observations on a series of electrical experiments / By Dr. Hoadly, and Mr. Wilson.
- Hoadly, Dr. (Benjamin), 1706-1757.
- Date:
- 1759
Licence: Public Domain Mark
Credit: Observations on a series of electrical experiments / By Dr. Hoadly, and Mr. Wilson. Source: Wellcome Collection.
91/96 (page 85)
![[ »5 ] . An ExtraEl of a Letter to Mr. Smeaton, dated from Dublin the 6th of Odl. 1746. Dear Friend, J SHALL defer giving you any account of this city, &c. till 1 write again, becaufe I have only time to ac¬ quaint you, that lince my arrival in this kingdom, I have had an opportunity of trying fome eledtrical experiments, which I had before thought of in England. And I have the pleafure to inform you, that I find the eledfric effluvia do not come from the globe of glafs, but from the earth itfelf, and all non-eledtric bodies, which are round about the apparatus. To try this, Hand upon a board when placed on four bottles, or upon a cake of wax, and endea¬ vour to excite a tube of glafs; after that obferve the effedt. Then get off from the board or wax, and excite the tube again, and you will perceive a very great difference : for the effedt produced in the laft circum- ftances, will be confiderab’iy greater than in the former circumflances. Another experiment which I propofed to try, was with the Leyden bottle, whether it obferved any law in the accumulation of eledtric matter. And I found that it was always in proportion to the thinnefs of the glafs, the furface of the fame, and that of the non-elec¬ tric in contadt with it on the in and outilde thereof. The experiment l made, was with water a little warmed, which was poured into the bottle, and the outiide was immerfed in](https://iiif.wellcomecollection.org/image/b30417429_0091.jp2/full/800%2C/0/default.jpg)
