Electrical discharge Size:L: 90 x 60cm Mr Punch tells his readers

Mr Punch tells his readers that the Bill was 'very coldly received'

January 1973

facing away from camera

of which this is one of the last to be built

Original is oil on canvas 49x60

Electrical discharge Size:L: 90 x 60cm Mr Punch tells his readersStudy 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