Francis William Aston

Francis William Aston FRS (1 September 1877 – 20 November 1945) was an English chemist and physicist who won the 1922 Nobel Prize in Chemistry for his discovery, by means of his mass spectrograph, of isotopes, in a large number of non-radioactive elements, and for his enunciation of the whole number rule. Continue reading

Invention of the Mass Spectrometer

Joseph John Thomson invented the mass spectrometer or parabola spectrograph in Cambridge, England in 1913. Continue reading

Mass Spectrometer Analyzes Neon

A mass spectrometer analyzed neon atoms and found the natural element was composed of two isotopes, neon 20 and 22 by Francis William Aston, Continue reading