Word: atom
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Dates: during 1930-1939
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Energies of that vast order are released when in a blazing star a heavy atom of matter sheds protons and electrons and becomes a lighter element...
From Democritus the Greek (400 B. C.) to the late great Englishman John Dalton (1766-1844) scientists were blandly sure that the atom was the smallest thing in the world. Modern physicists know that this is not so, that the atom is composed of a nucleus and surrounding spheres of electrons, that these constituents are capable of being separated. Scientists probing into the infinitesimal atomic nucleus with various tools, last week published new data concerning the nature of the universe and the physical properties of drinking water...
...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...
...fourth time that Albert James ("Mighty Atom") Booth had played in a game against Harvard. As captain of Yale's freshmen he had seen his team beaten 7 to 6. In 1929 and 1930 he had been on losing Yale varsities. Last week, in the soth Harvard-Yale game...
...laboratory at Notre Dame. The chemists gave up working on divinylacetylene and concentrated on the more homely mono-vinylacetylene. They treated it with hydrogen chloride and first thing they knew they had a fine pot of chloroprene. Chloroprene differs from rubber's polymer, isoprene, only in that a chlorine atom replaces the methyl group, so after that the going was fairly easy. They had only to polymerize the chloroprene to the right point, and all of them were experienced polymerizers. When they finished they put a piece of their rubber into a bottle of kerosene, left it 72 hr. When...