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Description: | Device exhibiting a low friction bearing. Friction wheels on circular base with holes for pulley cord - (top of Atwood's machine). Pulley wheel diameter 164 mm; small wheel diameter 100 mm; height from base 220 mm Steel axles. Glass cover with brass knob and base cover not perfectly circular fitting groove only one way round. Three 2 mm brass stud feet. Displayed in King's visitors' centre until 1993 - 2003. "Brilliant workmanship in the 1780s by the hand of Professor Copland himself. He created this model of a low friction bearing used as part of Atwood's machine." Storage glass cover is dome ABDNP200518a | License: | http://www.abdn.ac.uk/historic/Copyright_terms_conditions.shtml | Publisher: | ABDNP University of Aberdeen, Natural Philosophy Collection of Historical Scientific Instruments | Rights holder: | 47718 | Temporal: | 1780-1800 | Source: | University of Aberdeen | Creator: | Professor Patrick Copland | Identifier: | http://calms.abdn.ac.uk/Geology/dserve.e... | Go to resource |
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pulleys
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