Word: proof
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Dates: during 1930-1939
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...explains not only the constitution of our universe, but the history of astronomical though from the earliest times. The reader with but a mild interest in the subject matter will find in it a fascinating tale, easy to pick up, next to impossible to lay down. It is another proof of the ancient dictum that the truly great man is he who can express the most complicated of thoughts without resorting to involved phraseology as a sort of camouflage...
...yield $8,000. The annual charge for 40 telephones was $2,880. The council majority wanted whichever proposition would yield the city the greater net profit. For 15 minutes they argued about arithmetic. Then they voted 4 to 3 for a 1½% tax and 40 free telephones. As proof of their wisdom the majority offered the following calculations...
After okaying the galley proof, Editor Leach scribbled a headline: "The Revolt Against Crime." He clapped a hat over his thinning brown hair, slipped into a raincoat, picked up his umbrella, strode out of the Forum office and joined the late afternoon crowds hurrying along Manhattan's Lexington Avenue. There was plenty of time for his customary brisk jaunt through Central Park before dinner...
...March 1933 the American Chemical Society, of which he was 1919 president, gave Dr. Bancroft its prized Nichols Medal "for his work on the application of colloid chemistry to physiological problems, particularly insanity, in which he has advanced scientific proof that dementia and drug addiction are curable chemically...
Like the perturbations in planetary orbits that indicated the existence of a planet beyond Neptune, all this was evidence, not proof. Like the planet Pluto, heavy hydrogen had to be located. Dr. Urey knew that if its atoms had indeed a mass of two units, it would show spectrum lines of a predictable kind and position. The question was how to get the substance in sufficient concentration to show spectrum lines at all. It occurred to him that if liquid hydrogen were allowed to evaporate, the lighter atoms would pass off first, leaving the heavy ones in greater abundance. Hydrogen...