deaths
Kathleen Lonsdale, Irish crystallographer and prison reformer (born 1903)
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Kathleen Lonsdale
British crystallographer and activist (1903–1971)
Dame Kathleen Lonsdale was an Irish crystallographer, pacifist, and prison reform activist. She proved, in 1929, that the benzene ring is flat by using X-ray diffraction methods to elucidate the structure of hexamethylbenzene. She was the first to use Fourier spectral methods…Source: Wikipedia (CC BY-SA)
April 1
Day of the year
April 1 is the 91st day of the year in the Gregorian calendar; 274 days remain until the end of the year.Source: Wikipedia (CC BY-SA)