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September 23, 1929

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Headlines from September 23, 1929

Notable Deaths

Richard Adolf Zsigmondy

1929Richard Adolf Zsigmondy, Austrian-German chemist, physicist, and academic, Nobel Prize laureate (born 1865)[โ€ ]

Richard Adolf Zsigmondy was an Austrian-born chemist. He was known for his research in colloids, for which he was awarded the Nobel Prize in Chemistry in 1925, as well as for co-inventing the slit-ultramicroscope, and different membrane filters. The crater Zsigmondy on the Moon is named in his honour.