Word: electronic
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Dates: during 1930-1939
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...Thomson discovered the electron...
...noble" gases (Argon, Helium, etc.) and made the most accurate contemporary determinations of the ohm and the ampere. He got a Nobel Prize 20 years after he retired from the Cavendish directorship. Third director was Sir Joseph John Thomson, who held the post for 35 years, discovered the electron while studying electric discharge in gases. Still alive, a Grand Old Man of 82, Sir Joseph strolls about in a black bowler with a cane clutched behind his back, attends "hall" (dinner) once a week, still putters in an old laboratory, is said by irreverent students never to take a bath...
...modernizing the lecture halls. A big new laboratory for research on the atom-with library, conference room and tea room-will eat up $500,000. Another $50,000 went into a 36-ft. high-voltage atom-smasher. This hurls atomic bullets at controlled energies up to 2,000,000 electron-volts. Still another $30,000 was laid out for a cyclotron-an atom-smashing machine of the type invented by the University of California's Ernest Orlando Lawrence, which spirals atomic bullets up to huge speeds by repeated electrical kicks...
...which he regarded a piece of radium brought to Australia by Frederick Soddy, famed pioneer in the study of isotopes. When William was 18 his father returned to England to assume a professorship at Leeds. William graduated from Cambridge's Trinity College, started research work at Cavendish under Electron-Discoverer Thomson. About that time the elder Bragg showed his son some reports by Germany's Max von Laue. who was finding curious bright spots when X-rays are diffracted by crystals. Father and son joined forces, undertook intensive study of X-ray diffraction. They not only measured...
...standard table of elements lists 92-from hydrogen, the lightest element, to uranium, the heaviest. An atom of hydrogen has one positive charge on the nucleus and one planetary electron; uranium has a positive nuclear charge of 92, and 92 attendant electrons. The existence of all these elements has been well established, except for Nos. 85 and 87 (alabamine and virginium),† whose discovery has been claimed by various investigators but not yet certainly confirmed. The existence of elements heavier than uranium is theoretically possible. In fact, such heavy elements of higher numbers than 92 are supposed to exist...