Electrical discharge Finish:10-pack Marks Hall

Marks Hall

A lady and gentleman in theatrical costume in the stocks

Sunday 4th August 1996

Mr Punch stamping and kicking the newspapers

One of the crew of three is shown operating a bellows to supply air

Electrical discharge Finish:10-pack Marks HallStudy 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