deuterium
harold urey
['grigory neujmin', 'johan gadolin', 'thorstein veblen', 'dmitri mendeleev', 'crimean astrophysical observatory', 'maurice martenot', 'edward bowell', 'claude chappe', 'carl wirtanen', 'bartolomeo cristofori', 'william rowan hamilton', 'louis boyer', 'gerry anderson', 'bill mollison', 'frederick scott archer', 'indiana asteroid program', 'eric elst', 'niels bohr', 'lyudmila zhuravleva', 'ernest hemingway', 'pieter zeeman', 'franz kaiser', 'urata', 'brouwer', 'hermann goldschmidt', 'herschel', 'gustav rose', 'thomas newcomen', 'otto hahn', 'birmingham university', 'joseph priestley', 'speke', 'lewis swift', 'niels henrik abel', 'bickley', 'kant', 'noam chomsky', 'hyperboloid', 'karl reinmuth', 'benjamin franklin', 'evangelista torricelli', 'henry bessemer', 'cornelis johannes van houten', 'gause', 'eugene shoemaker', 'mike brown', 'tsutomu seki', 'vint cerf', 'nikola tesla', 'edwin hubble', 'linear', 'robert bunsen', 'egide walschaerts', 'kirchhoff', 'johann palisa', 'annibale de gasparis', 'sergey belyavsky', 'nauchnyj', 'alonzo church', 'nikolai chernykh', 'sequoyah', 'babbage', 'robert luther', 'arnold schoenberg', 'michael brown', 'carolyn shoemaker', 'ernest rutherford', 'heinrich schenker', 'emmett chapman', 'edwin mcmillan', 'ptolemy', 'william hyde wollaston', 'harlow shapley', 'carl gustav mosander', 'schelte bus', 'lee de forest', 'stallman', 'liisi oterma', 'toshimasa furuta', 'marija gimbutas', 'miguel itzigsohn', 'christopher latham sholes', 'nicolas bourriaud', 'charles darwin', 'karl drais', 'james watt', 'silas weir mitchell', 'george westinghouse', 'marie curie', 'moog', 'donald knuth', 'ernst mayr', 'john grinder', 'cyril jackson', 'werner heisenberg', 'henri lebesgue', 'pelageya shajn', 'icao', 'ephraim shay']
Ferdinand Brickwedde
Ferdinand Graft Brickwedde (26 March 1903 – 29 March 1989), a physicist at the National Bureau of Standards (now the National Institute of Standards and Technology), in 1931 produced the first sample of hydrogen in which the spectrum of its heavy isotope, deuterium, could be observed. This was a critical step in the discovery of deuterium, for which Brickwedde's collaborator, Harold Urey, was awarded the Nobel Prize in Chemistry in 1934.