Electrical discharge Size:Standard: 6 x 4in Saturday 9th December 1967

Saturday 9th December 1967

and the first Hupmobile was exhibited at the Detroit Motor Show of that year

using a Wimshurst machine (electrostatic generator) and two 10-gallon Leiden jars

The python at the Zoological Gardens in London had at this time laid some 100 eggs

Electrical discharge Size:Standard: 6 x 4in Saturday 9th December 1967Study 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