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South-west view of the Church of St Olave Jewry
that Boydell had done it himself to excite public sympathy
1821) for Martin van Marum and installed at Teyler's Museum at Haarlem in the Netherlands
The great telescope seen from the south-east
Electrical discharge Size:S: 60 x 45cm South-west view of the ChurchStudy 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
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