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Description: | Glass plate mounted in wooden frame produced by Lord William Armstrong during his electrical experiments in late 1890s; shows an electrostatic discharge figure obtained by connecting the Wimshurst machine to electrodes placed on a glass plate covered with a thin layer of pitch and resin varnish, and allowing a cloud of fine sulphur and red lead particles to settle while the electric field was applied.
Material: glass
Part: frame, Material: wood | Source: | Tyne & Wear Archives & Museums | Identifier: | emu.ecatalogue.science&industry.482014 | Go to resource |
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