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
Joseph John Thomson invented the mass spectrometer or parabola spectrograph in Cambridge, England in 1913. Continue reading
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
Co-Founder of Center for the Study of Human Polymorphisms, now called Fondation Jean Dausset-CEPH.
Published in October 1992 in the journals Nature and Science, were the Human chromosome gene-linkage maps. Continue reading
First North American presented the Nobel Prize in Chemistry was in 1914