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Title: Nine inch mirror of speculum metal (exact diam" 8 15/16 in) [Go to resource]
Description: Nine inch mirror of speculum metal (exact diam" 8 15/16 in) in tin cell with close fitting cover 9 1/2" diam, 1 1/2" deep, focal length 10' 1", cell and cover each painted " J" License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: metal mirrors
concave mirrors
components
astronomical instrumentsTemporal: 1780-1820 Source: Science Museum Creator: Herschel, William Identifier: 1925-464 Go to resource More Like this...
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