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 Tyn·dall /ˈtɪndḷ/
 廷德爾

 Tyndall
      n : British physicist (born in Ireland) remembered for his
          experiments on the transparency of gases and the
          absorption of radiant heat by gases and the transmission
          of sound through the atmosphere; he was the first person
          to explain why the daylight sky is blue (1820-1893) [syn:
           John Tyndall]