Description

sleeping dolls and rat traps

The home of John Bishop

Inscribed in pencil lower left '1804'

group of relics

Electrical discharge mb-code 1619161 sleeping dolls and rat trapsPatterns produced by electrical discharges on surfaces revealed by dusting with powdered red lead and sulphur. Sometimes termed 'Lichtenberg figures'. These experiments were conducted at Cragside in Northumberland, England, using a Wimshurst machine (electrostatic generator) and two 10 gallon Leiden jars. Current was conveyed to two rod conductors with a spark gap at which coated wires discs or plates were positioned. Lord Armstrong exhibited figures

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Electrical discharge mb-code 1619161 sleeping dolls and rat traps

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