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seen here waving to fans
Mercers' shop
11th December 1945
These properties were affected by the construction of Holborn Viaduct in the 1860s
Electrical discharge Waving Arms seen here waving to fansStudy 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
