Lead wire explosion pattern Finish:10-pack 19th July 1974

19th July 1974

In the background is a bookcase holding generally unidentified volumes

Paris stands amidst the victims of France's unsuccessful war against Prussia

Half-length portrait

Lead wire explosion pattern Finish:10-pack 19th July 1974Effect produced by the explosion of lead wire positioned over a sheet of paper or glass when subjected to a high voltage electrical current. This was provided by the electrostatic generator and associated machinery designed by John Cuthbertson (bap. 1743 d. 1821) for Martin van Marum and installed at Teyler's Museum at Haarlem in the Netherlands. The results of these experiments are considered to be an early milestone in high energy plasma physics.