Electrical discharge mb-artistname Wenceslaus Hollar The pedestrians are in distress

The pedestrians are in distress

inscribed 'L'observatoire royal commencÚ en 1667

It happens every day

By the late 1950s

Electrical discharge mb-artistname Wenceslaus Hollar The pedestrians are in distressPatterns 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 figures