Electrical discharge Carolingean View of the west side

View of the west side of old London Bridge

'Hot Bak'd Wardens Hot'

They think that for a fox

Plate III of A London Nuisance

watched by two children

Electrical discharge Carolingean View of the west sideStudy 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