Electrical discharge Size:L: 90 x 60cm Apsley Pellatt (1791-1863) was an

Apsley Pellatt (1791-1863) was an unsuccessful candidate for election to the Royal Society in 1851

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Electrical discharge Size:L: 90 x 60cm Apsley Pellatt (1791-1863) was anStudy of patterns 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