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Globe electrical machines, c 1760-1770.

Globe electrical machines, c 1760-1770.
3 1 c m
actual image size: 32cm x 23cm


These machines were made by designed by Francis Hauksbee (1666-1713) and made by George Adams, instrument maker to the king. With the machine on the right, the glas globe is held vertically and rotated by means of a handle and gearing mechanism which is in the bras box. A piece of sheepskin was held against the globe and created the charge when the glas was rubbed against it. The globe of the instrument on the right contained a small circular piece of wood with threads attached. These would react by being attracted to the surface of the globe if it was rubbed to develop a static charge.

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© Science Museum / Science & Society Picture Library

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