Émile Bertrand

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Émile Bertrand (1844–1909) was a French mineralogist, in honour of whom bertrandite was named by Alexis Damour.[1] He also gave his name to the Bertrand lens or phase telescope.

He studied at the Ecole des Mines in Paris and was a co-founder of the Société française de Minéralogie.[1] He wrote a book on the application of microscopy to mineralogical studies, "De l'Application du microscope à l'étude de la minéralogie" (1878);[2] published a translation of Ernst Mach's work on the history of mechanics, "La mécanique: exposé historique et critique de son développement" (1904);[3] and is credited with the design of a refractometer.[4]


  1. ^ a b Wilson, Wendell E. "Émile Bertrand". Mineralogical Record Biographical Archive. Retrieved 8 December 2010.
  2. ^ De l'Application du microscope à l'étude de la minéralogie OCLC WorldCat
  3. ^ La mécanique Google Books
  4. ^ Dictionary of Gems and Gemology by Mohsen Manutchehr-Danai