Catalogue > Virtual Visit > Room XIV |
XIV.25 Portable plate electrical machine |
Maker: | unknown |
Date: | ca. 1775 | Materials: | wood, brass, glass, black velvet | Dimensions: | total height 460 mm, base (excluding conductor) 325x140 mm, glass disk diameter 330 mm, thickness 6 mm | Current inventory: | 2686 |
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Frictional electrical machine with a disk covered with black velvet. There is a Lane discharging electrometer. One of a set of four machines (inv. 2688 - inv. 2687 - inv. 2689) used to demonstrate the effects of different materials on the polarity of the generated charge, positive or negative. Provenance: Lorraine collections.
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