September 1, 1877 – Birth of Francis William Aston, physicist, chemist, and university professor who discovered a large number of non-radioactive isotopes

Francis William Aston was an English physicist, chemist, and university professor who was awarded the Nobel Prize in Chemistry in 1922 for the discovery of a large number of non-radioactive isotopes using a mass spectrometer.

After the First World War he invented a mass spectrometer that allowed him to discover, due to mass differences, a certain number of isotopes in non-radioactive elements, which allowed him to identify 212 of the 287 natural isotopes. This was the reason why he was awarded the Nobel Prize.

If you want to know more about this scientist, click on the following link: Francis William Aston