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Title: Secondary emission photo-cell [Go to resource]
Description: Secondary emission photo-cell, caesium-on-silver cathode covering about half the wall and caesium-treated silver target in centre of cell, CWS/24 S.E.80 License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Source: Science Museum Identifier: 1937-644 Go to resource More Like this...
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