Austrian chemist, Richard Adolf Zsigmondy known for his research in colloids, for which he was awarded the Nobel Prize in chemistry in 1925.
In 1889, Zsigmondy received his doctorate from the University of Munich . He worked in research at Berlin and later joined the faculty of the University of Graz, Austria. He was director of the Institute for Inorganic Chemistry at the University of Göttingen from 1908 to 1929.
Zsigmondy worked for Scott Glass manufacturing company for several years, then quit to pursue his own research in a laboratory at his home, where he designed the ultramicroscope and did much of his early research into colloids.
In 1925, Richard Zsigmondy won Nobel Prize for Chemistry, for the demonstration of the heterogeneous nature of colloid solutions (substances consisting of particles larger than atoms but too small to be visible to the naked eye or through conventional microscopes) and for the methods he used, which became fundamental in modern colloid chemistry . In 1903 , in order to conduct his research on colloids, he invented the ultramicroscope , which projects high-intensity illumination at right angles, using scattered light to indicate the presence of particles. This allows measurement, quantification, , and tracking of smoke particles, colloidal particles, and other extremely small objects.
In 1913, he introduced an improved immersion ultramicroscope a. The crater Zsigmondy on the Moon is named in his honor.