Word: electronic
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Dates: during 1930-1939
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...Nucleus, The late great Dmitri Ivanovitch Mendeleeff arranged the 92 elements in a periodic table according to weight. The late Henry Gwyn-Jeffreys Moseley found that each atomic number corresponded to the number of negatively charged electrons outside the nucleus. Element No. 1, hydrogen, has one such electron; No. 2, helium, has two; lithium, No. 3, three. . . . For each negative electron the nucleus of an atom must contain a positively charged proton. And, except in hydrogen, all nuclei were found to contain more protons than were electrons around them. The additional necessary electrons were found in the nucleus. Lithium, with...
...James's work is not quite the sort which wins a Nobel Prize in physics nowadays. The Nobel tendency in recent years has been to reward workers with the sub-atomic-X-ray effects (Taman, Compton), wave mechanics (de Broglie), electron count (Millikan), atomic structure (Bohr), quantum hypothesis (Planck), forces (Einstein). Sir James has the mathematical baggage and creative imagination requisite for joining that group. But he applies himself to descriptions of the universe and its relatively minute stellar components. It was for that work that the Franklin Institute deemed him worthy of U. S. Physics' top medal...
...Physical Colloquium, Monday, in the Cruft Laboratory Lecture Room, C. K. Jen will speak on "A New Treatment of Electron Tube Oscillators" and I. F. Birch is to lecture on "Concentrated Space Charge in Calcite." The talks occur at 4.45 o'clock after a tea served in the library of the New Physics Laboratory...
Then there are standard quarts and bushels, standard tin cans and hotel dishes, machines which weigh an electron, others which weigh bridges. They bend steel girders at the bureau and blow up steel tanks. One device, an interferometer, indicates how far a 40-in. brick wall is deflected by the pressure of one hand. They have an ultramicrometer which measures a movement of one-millionth part of an inch. But it is "too sensitive for any known...
...clever device Chairman Robert Andrews Millikan of the California Institute of Technology was able to measure the electrical charge of the electron, the indivisible unit of all electricity. For that Dr. Millikan won a 1923 Nobel Prize. Last week two other Caltech men-Jesse W. M. du Mond and Harry Kirkpatrick- reported the perfection of another device, to measure the speed of electrons moving within atoms. A serviceable description of the structure of an atom is this: At its core are, according to the particular kind of atom, 1 to 238 protons (positive charges of electricity). The hydrogen atom (simplest...