Alexandre-Émile Béguyer de Chancourtois
Alexandre -Emile de Béguyer Chancourtois ( born January 2, 1819 in Paris, † November 14, 1886 ) was a French chemist and geologist.
Life
Béguyer de Chancourtois studied at the École Polytechnique and the École des Mines de Paris and received his doctorate in 1838.
From 1875 he was professor of mine surveying and geology at the École des Mines in Paris, where he proposed the establishment of seismographic stations. He participated in the cartographic recording of France.
Precursor to the periodic table of the elements
In 1862 he recognized as one of the first periodicity in the chemical elements and devised a classification system (" telluric helix " ), after the then known chemical elements were lined up according to their atomic masses helically on a cylinder, so that elements with similar properties perpendicular one above the other appeared. A Achterperiodizität described afterwards, the English chemist John Newlands (1837-1898) as octave rule.
Writings
- Études sur le départ stratigraphiques de la Haute- Marne. Paris, 1862.
- Geologist ( 19th century)
- Chemists ( 19th century)
- Frenchman
- Born in 1819
- Died in 1886
- Man