Raphael Eduard Liesegang
Raphael Eduard Liesegang | |
---|---|
Born | |
Died | 13 November 1947 | (aged 78)
Nationality | German |
Scientific career | |
Institutions | Ed. Liesegang oHG |
Raphael Eduard Liesegang (/ˈliːzəɡɑːŋ/) (1 November 1869 – 13 November 1947) was a German chemist, photographer and entrepreneur born in Elberfeld.
He is known for his work on Liesegang rings. He also helped develop the methods of capillary analysis, a precursor to paper chromatography, published a paper on the possibility of television (years before the discovery of the electron), contributed to chromosome theory, worked on properties of aerosols and gelatins, the origins of silicosis, the role of carbon dioxide in plant life and the mechanism of both black and white and colour photographic processes.
The son of a painter (and eventual photographer), Liesegang longed for an artistic career but lacked the ability to draw or paint. His father would later invent a camera and photography would go on to be one of Liesegangs passions. Research into photographic emulsions led to his personal discovery of Liesegang rings. He was not the first person to observe the effect, but they bear his name, as he devoted so much time to researching them.
As an heir to the founder of Ed. Liesegang oHG, Düsseldorf, he also owned a factory producing photographic paper and chemicals. Ed. Liesegang oHG later expanded into optics manufacturing, and sold its photochemical interests.
He has published the first German brochure on television : Beiträge zu Problem des elektrischen Fernsehen, 1st edition 1891, 2nd edition 1899
References
- Claus Priesner (1985), "Liesegang, Raphael", Neue Deutsche Biographie (in German), vol. 14, Berlin: Duncker & Humblot, p. 538
- Heinz K. Henisch, Crystals in gels and Liesegang rings ISBN 0-521-34503-0
- Le grand chimiste allemand Raphael Eduard Liesegang contribue à la question de la télévision électrique, "problème du présent" (1889–1899)
- Articles with short description
- Short description is different from Wikidata
- Articles with hCards
- CS1 German-language sources (de)
- Articles with ISNI identifiers
- Articles with VIAF identifiers
- Articles with BNE identifiers
- Articles with BNF identifiers
- Articles with BNFdata identifiers
- Articles with GND identifiers
- Articles with ICCU identifiers
- Articles with J9U identifiers
- Articles with LCCN identifiers
- Articles with Libris identifiers
- Articles with NKC identifiers
- Articles with NTA identifiers
- Articles with DTBIO identifiers
- Articles with SNAC-ID identifiers
- Articles with SUDOC identifiers
- 19th-century German chemists
- 1869 births
- 1947 deaths
- 20th-century German chemists
- People from Elberfeld
- Scientists from Wuppertal
- Businesspeople from Wuppertal
- All stub articles
- German chemist stubs