Image: Opfindelsernes bog3 fig282

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Description: Drawing of a pith ball electroscope, invented 1754 by John Canton. The ball is shown attracted to an electrically charged object held in the hand.
Title: Opfindelsernes bog3 fig282
Credit: "Opfindelsernes Bog" (Book of inventions) 1878 by André Lütken, Ill. 282.
Author: Morten Bisgaard
Permission: PD-Old
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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