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Title: Trevelyan's rocking apparatus [Go to resource]
Description: piece of metal on the end of a metal rod. The metal rod has a brass ball on the other end. The device is placed on metal block and heated at one end. When left to cool it moves slightly emitting a rocking sound. 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: 1860-1890 Source: University of Aberdeen Creator: unknown Identifier: http://calms.abdn.ac.uk/Geology/dserve.e... Go to resource More Like this...
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