Word: molecular
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Dates: during 1930-1939
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...furnace, such metals as vanadium, titanium, columbium, zirconium, and the platinum group, which have been difficult to study because of their very high melting points, can be melted into very pure alloys. Then, through X-ray photographs, significant students can be made of the individual peculiarities of molecular structure and other physical characteristics...
...weight. Hence, by adjusting the distance between the hot surface of the distillate and a cold condensing surface, molecules can be separated by weight. "Dr. K. Hickman," said Dr. K. Hickman last week, ''began experiments in high-vacuum distillation in 1927. In 1931 he constructed the continuous molecular still and was able to separate from cod-liver oil a golden waxy concentrate which showed high potency of vitamins A and D. Up to this time, molecular distillation had been a scientific curiosity. It represented the ultimate in the application of vacuum...
...Szent-Györgyi's long researches on carbohydrate metabolism and oxidation also counted with the committeemen, but that they were largely preoccupied with Vitamin C this year was shown when they split the Prize for Chemistry between Haworth of England who mapped the vitamin's complex molecular structure, and Karrer of Switzerland who synthesized it. The Index's point was that a shy, soft-spoken U. S. chemist, Dr. Charles Glen King of the University of Pittsburgh, was the first to isolate Vitamin C and recognize it as such, that he announced his isolation...
...Sweden, Nobel Laureate The Svedberg had designed an ultracentrifuge - a machine which separates heavy molecules from light ones, inferentially measuring their molecular weights, by whirling them at enormous speeds. In this ultracentrifuge the molecular weight of the Stanley crystals was found to be about 17,000,000 units (17,000,000 times as heavy as a hydrogen atom...
...latest discoveries have gone even further. Other plant viruses resisted the chemical method of separation. Dr. Ralph Wyckoff, however, designed an air-driven centrifuge, which now serves not only to measure molecular weights but to perform the first separation of viruses...