Electrical discharge silver tray Inscribed: 'Tabula XXXXI

Inscribed: 'Tabula XXXXI

Marquess of Argyll (1605/7-1661) by David Scougall (active 1654-1677) Scottish painter

and a series of experiments"

Young pop stars gathered at the Albert Memorial in London for a bread and water lunch to draw attention to Oxfam's Christmas appeal

filled with cattle with the faces of peers

Electrical discharge silver tray Inscribed: 'Tabula XXXXIStudy 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