Word: heavier
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Dates: during 1930-1939
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...heavy crude oil into a number of lighter, more salable derivatives such as kerosene and gasoline. Polymerization is the reverse; it takes the very lightweight, gaseous fractions of petroleum, which were formerly wasted or used only in restricted ways,* and through pressure, heat and catalytic agents builds them into heavier molecules for high-test (antiknock) gasoline...
...years ago, and therefore that the rays should fill all space more or less uniformly. This is only one of several hypotheses advanced to account for the rays' origin. Dr. Millikan used to believe they were liberated in interstellar space during the coalescence of light elements into heavier ones. Dr. Fritz Zwicky of Caltech believes that cosmic rays may be the products of individual stellar explosions which occur all the time in some region or other of the universe. Hannes Alfven of Sweden's Upsala University holds that the rays are free-moving particles in space accelerated...
...lighter "carry-all" will be obtained to supplement the heavier ambulance purchased last year. "This machine darts onto the battlefield, picks up the less seriously wounded, and carries them back to the medical unit, while the heavier vehicle is reserved for those with hurts so serious that such hurried trips in a light truck might have fatal effects...
...flexible schedule of study. Lack of funds has always been the answer to the suggestion of evening labs. But for a matter of such importance to many students, it should be possible to find the necessary funds. The costs of opening the laboratories three evenings per week for the heavier courses should not be prohibitive...
...attachés and foreign correspondents. Displayed for the first time in public, however, were nine heavy tanks of new design, from 18 to 25 tons in weight, varying widely in traction and armament. Still lighter than the 50-ton tanks used by Russians and French in Leftist Spain, heavier than the Italian and German affairs of about ten tons used in Rightist Spain, these new experimental tanks were apparently designed to meet the military criticism that at present Germany's tanks are either too light to be good fighters or too heavy for great mobility...