Harris's balance electrometer, 1834.
4 0 c m
 
34cm
actual image size: 26cm x 32cm

Harris's balance electrometer, 1834.

© Science Museum / Science & Society Picture Library

Description

Snow Harris designed this instrument in 1834 to compare the quantity of electricity imparted to a substance with its attractive power. In an experiment similar to Petrus van Muschenbroek's concerning magnetism a century before in 1725, he weighed the force of the electric attraction on a balance. The instrument was nade by J Newman.
 

Image Ref.

10190619
 

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