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Title: Polar clock, by W [Go to resource]
Description: Polar clock, by W. H. Darker, Lambeth; London, mid 19th century. Wooden frame with glass semicircle inlaid with selenite that polarises sunlight according to time of day when viewed from the north. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Temporal: 1845-1855 Source: Science Museum Creator: Darker, W. H. Identifier: 1918-117 Go to resource More Like this...
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