Émile Bertrand
Émile Bertrand (* 1844 ; † 1909 ) was a French mineralogist and mining engineer.
Bertrand came from a wealthy family and, after a few years of traveling, studied at the École des Mines de Paris from 1869 . He then lived as a mineral dealer and collector in Paris (he had a Comptoir mineralogique ).
He published essays and books on mineralogy and in 1870 developed one of the earliest microscopes specially designed for petrography. He also published on the use of the microscope in mineralogy (1878) and the refractometer (1885) and translated the history of mechanics by Ernst Mach into French (1904).
He was one of the founders of the French Mineralogical Society.
Honors
Bertrand was an honorary member of the Mineralogical Society of Great Britain and Ireland .
In 1883 Augustin Alexis Damour named a mineral he described in honor of Bertrand as Bertrandite .
Together with Giovanni Battista Amici , Bertrand is the namesake of the “Bertrand Amici lenses” (also “Bertrand lenses”), which are used in microscopy as auxiliary lenses that can be switched on and off in polarizing microscopes .
Web links
Individual evidence
- ^ Paul von Groth History of the Development of Mineralogical Sciences , Springer Verlag 1926
- ^ Mineral Atlas: Bertrandit
- ↑ Technology dictionary - Amici-Bertrand-lens
| personal data | |
|---|---|
| SURNAME | Bertrand, Émile |
| BRIEF DESCRIPTION | French mineralogist |
| DATE OF BIRTH | 1844 |
| DATE OF DEATH | 1909 |