. Electronic apparatus for biological research . Copper block (a) Glass I Conducting film , v.^ vk â â â . "7^ k'-^ k^^"'.^^ '»^, -t.^ '-v ^, â -'^ ^. \ 'J of stannic oxide --^ r- ; ^ ', ,,V ^Phosphor in Evaporated aluminium film^ plastic (b) Figure (a) Destrian's original electroluminescent cell; (b) A conventional electroluminescent light source

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Keywords: ., bookcentury1900, bookcollectionameri, bookcollectionbiodiversity