On This Day In Chemistry

September 1st

British chemist and physicist Francis W. Aston was awarded the Nobel Prize in Chemistry on this day in 1922

He developed the mass spectrometer, a device that separates molecular fragments of different mass and measures them with remarkable accuracy. Using the spectrometer, Aston discovered that neon had two isotopes, 20Ne and 21Ne, and was awarded the 1922 Nobel Prize for this work.

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