Francis William Aston (1877-1945)
Francis William Aston, an experimental physicist, was born in Harborne, England, in September 1st 1877, and died in Cambridge, in November 20th 1945.
He worked with Frankland in 1898, with Poynting in 1903, and with J.J Thomson in 1910. He had enormous experience in vacuum techniques what made possible the evidence of the isotopic constitution of a stable element. In 1913 he accomplished the partial separation of isotopes by the diffusion method.
In 1922 he received the Nobel Prize of Chemistry. His work is explained in his book Mass Spectra and Isotopes (1942).