Francis Aston (1877-1945) won the Nobel prize for Chemistry in 1922, "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". His Nobel medal is now up for sale.
Below one of the illustrations from Aston's book Isotopes, published in 1922.
Below one of the illustrations from Aston's book Isotopes, published in 1922.
