Word: molecular
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Dates: during 1930-1939
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...Imperial College which showed a germ called Micrococcus flavus magnified 16,000 times. Last week in Richmond, Dr. Vladimir Kosma Zworykin of RCA Manufacturing Co. showed fluorescent-screen projections, made with his electron microscope, of tungsten crystals in which the molecules themselves could be distinguished in the molecular structure...
...that energy is exchanged in separate, indivisible bundles called quanta, quantum mechanics has been powerfully developed by such giants of physics as Bohr, de Broglie, Heisenberg, Schrodinger and Dirac (Nobel Prizewinners all). It has interpreted the laws of radiation, the laws of specific heat, the details of atomic, molecular and X-ray spectra...
...recent years Dr. The Svedberg, a Swedish Nobelman, has done much research on giant protein molecules, determining their molecular weights after separating them in powerful centrifuges (whirling machines) of his own devising...
...British journal Nature fortnight ago, Dr. Svedberg reported experiments on molecules of hemocyanin (molecular weight, 6,740,000 units), a blue pigment from the blood of mollusks. He and his co-workers at the University of Upsala bombarded the hemocyanin particles with quanta of energy in the form of ultraviolet light. Certain wave lengths of the bombarding radiation split the blood pigment molecules into halves. This was like splitting inorganic atoms in a high-voltage atom-smasher...
...appears that about twelve miles up there is a rich mixture of primary rays and of secondary rays created by collisions between the primaries and air molecules. Above that height the air is so thin (i.e., molecular targets are so few) that the secondary radiation falls off. Below twelve miles the total intensity also declines because more & more of the primaries are absorbed by atmospheric resistance...