Raphael Eduard Liesegang

Raphael Eduard Liesegang (1869 to 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, and worked on the 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. He was the son of a painter and eventual photographer.