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Title: light interrupter [Go to resource]
Description: 2 glass disks (1 large, 1 small) with darkened stripes to create a slit effect, able to rotate on metal handle with turning handle and pulley cable spindle. On wooden protective slip. Gives interrupted patterns of light 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: 1800 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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