Scientist Datebook: August 21
Jean Servais Stas was born August 21, 1813. He is known for his accurate determination of atomic weights, a most skillful chemical analyst of the 19th century.
Stas was born in Leuven. Initially, he trained as a physician but later changed to chemistry and worked at the Polytechnic School in Paris under Jean-Baptiste Dumas. The two of them setup the atomic weight of carbon by weighing a sample of the pure material, burned it in pure oxygen, then weighed the carbon dioxide produced.
Stas was appointed professor at Brussels's Royal Military School in 1840. He became famous after he established the atomic weights of the elements more accurately than had ever been done before, using oxygen = 16 as the standard, laying the foundation for the periodic system of elements of Dmitri Mendeleev.
Jean Stas died in Brussels on December 13, 1891.
Video Credit:
Jan Servais Stas. en.wikpedia.org / Public Domain. Accessed August 21, 2012.
Resource:
Stas, Jean Servais. www.encyclopedia.com
(c) Tel Asiado. Written for InspiredPenWeb. All rights reserved.
Belgian Analytical Chemist
Jean Servais Stas was born August 21, 1813. He is known for his accurate determination of atomic weights, a most skillful chemical analyst of the 19th century.Stas was born in Leuven. Initially, he trained as a physician but later changed to chemistry and worked at the Polytechnic School in Paris under Jean-Baptiste Dumas. The two of them setup the atomic weight of carbon by weighing a sample of the pure material, burned it in pure oxygen, then weighed the carbon dioxide produced.
Stas was appointed professor at Brussels's Royal Military School in 1840. He became famous after he established the atomic weights of the elements more accurately than had ever been done before, using oxygen = 16 as the standard, laying the foundation for the periodic system of elements of Dmitri Mendeleev.
Jean Stas died in Brussels on December 13, 1891.
Video Credit:
Jan Servais Stas. en.wikpedia.org / Public Domain. Accessed August 21, 2012.
Resource:
Stas, Jean Servais. www.encyclopedia.com
(c) Tel Asiado. Written for InspiredPenWeb. All rights reserved.
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