1938 John Livingood and Glenn Seaborg discover iodine-131 and cobalt-60 - all isotopes currently used in nuclear medicine. John Livingood, Fred Fairbrother and Glenn Seaborg discover iron-59. James Chadwick discovers the neutron, and important component in nuclear fission.Ĭanada’s first uranium mine, at LaBine Point NWT (later renamed Port Radium), opens for production.Įnrico Fermi showed that neutrons could split many different types of atoms and yield results lighter than their original reactants. Herman Blumgart, a Boston physician, first uses radioactive tracers to diagnose heart disease. Frederick Proescher publishes the first study on the intravenous injection of radium for therapy of various diseases. Niels Bohr publishes model of the atomic structure – a mini solar system – still used today. This idea is later applied to medical diagnosis. George von Hevesy conceives the idea of using radioactive tracers. Also in this year, Samuel Prescott used radiation to kill bacteria in food.Įrnest Rutherford and Frederick Soddy establish theory of nuclear reactions and conduct various experiments to manipulate elements by bombarding them with alpha and beta particles.Īlbert Einstein puts forward a theory relating mass and energy, E=mc2. Radium would go on and be used as a treatment for cancer. They also postulated on the existence of Polonium and discovered Radium. Pierre and Marie Curie first use the word “radiation” to describe the rays they were finding. Henri Bequerel uses uranium and radium to discover alpha and beta rays, types of radiation. Within five years the British Army is using a mobile x-ray unit to locate bullets and shrapnel in wounded soldiers in the Sudan. The world immediately appreciates their medical potential. Wilhelm Röntgen accidentally discovers X-rays when he notices a luminescent screen left near a discharge tube was scintillating. Martin Klaproth discovers Uranium and names it after the planet Uranus.
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