Medical Definition of Francis Aston

1. Physicist at Cambridge University who invented the mass spectrometer in 1919, a device which could measure the mass of individual atoms. This device led to his discovery that the helium nucleus was less massive than the two hydrogen nuclei which could have formed it (implying that the missing mass could somehow be converted into energy through the process of nuclear fusion). (09 Oct 1997)

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Lexicographical Neighbors of Francis Aston

Frances Elizabeth Caroline Willard
Frances Hodgson Burnett
Frances Wright
Franceschetti's syndrome
Francesco Petrarca
Francis Albert Sinatra
Francis Aston (current term)
Francis Bacon
Francis Beaumont
Francis Crick
Francis Drake
Francis Edgar Stanley
Francis Everett Townsend
Francis Ferdinand
Francis Ford Coppola
Francis Galton
Francis Henry Compton Crick
Francis Hopkinson
Francis II
Francis Joseph
Francis Joseph I

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