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Electrical machine at Teyler's Museum Barend de Backer

Apparatus for electrical experiments Barend de Backer

Electrical machine at Teyler's Museum Barend de Backer

Electrical machine at Teyler's Museum Barend de Backer

Electrical machine and Leyden jar batteries at Teyler's Museum Barend de Backer

Cuthbertson's electrometer Barend de Backer