Otto Hahn
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Otto Hahn was a German chemist who was a pioneer in the field of radiochemistry. He is referred to as the father of nuclear chemistry and discoverer of nuclear fission, the science behind nuclear reac
William Ramsay, London 1905
Ernest Rutherford at McGill University, Montreal 1905
Hahn and Meitner, 1913, in the chemical laboratory of the Kaiser Wilhelm Institute for Chemistry. When a colleague she did not recognise said that they had met before, Meitner replied: "You probably mistake me for Professor Hahn."
Neptunium
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Neptunium is a chemical element; it has symbol Np and atomic number 93. A radioactive actinide metal, neptunium is the first transuranic element. It is named after Neptune, the planet beyond Uranus in
Sample of neptunium-237 in a glass vial
This nickel-clad neptunium sphere was used to experimentally determine the critical mass of Np at Los Alamos National Lab.
The 60-inch cyclotron at the Lawrence Radiation Laboratory, University of California, Berkeley, in August 1939
Neptunium ions in solution