Electrical discharge Pol de Limbourg View of the corner of

View of the corner of Chancery Lane

'The last dying speech of Bartlemy Fair'

Lord Derby reads the card presented at the doors of the Palace by Egypt

depicting the Crucifixion

16th May 1978

Electrical discharge Pol de Limbourg View of the corner ofStudy 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