Making isotopes matter: Francis Aston and the mass-spectrograph.

The article discusses British chemist and physicist Francis Aston, winner of the 1922 Nobel Prize for Chemistry for his discovery of the isotopes of light elements in 1919 using his mass-spectrograph at Cavendish Laboratory in Cambridge, England. The author focuses on Aston's career at Cavendish Laboratory and his adaptive methods of handling laboratory equipment for physics and chemistry experimentation. Some other notable scientists considered include J. J. Thompson, Ernest Rutherford, and Frederick Soddy.