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Willoughby Smith




   


Great Yarmouth, 06.April. 1828- Eastbourne, 17.July.1891
  
1873 Research on photo conductivity of selenium
   
In 1873 Smith Engineer society Gutta-Percha during the development of its instrumentation for the measurement and control of the laying of submarine cables and discovers studying the photo conduvtivity of selenium and shall notify in a letter to a Latimer Clark February 4 1873 and subsequently publish his research in the journal Nature on 20 February 1873