Word: crystallize
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Dates: during 1930-1939
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Died. Dr. John Jacob Abel, 81, professor emeritus of pharmacology at Johns Hopkins: of heart disease; in Baltimore. Among his medical discoveries, two were major: 1) the isolation of epinephrine; 2) the isolation in crystal form of insulin...
Back in radio's early crystal-set era, gloomy prophets spooked telephone stockholders, predicting that the wireless voice would make wire lines relics of an obsolete communications system. Few prophets foresaw that radio would vastly increase the use of wire services as radio pipelines, and nobody would have guessed the telephonic congestion caused by two radio riddle programs last week...
...announced a new trick to detect fakers who claim eye injuries, expected the trick to be of interest to insurance companies and industrial corporations. The gadget makes use of polarized light, which is light filtered so that it vibrates in only one plane. If light filtered through a polarizing crystal encounters a second crystal whose cleavage plane* is turned perpendicularly, it cannot get through. But if the second crystal is rotated until the cleavage plane is parallel to the light waves, the light is then transmitted...
...molecules in a crystal are arranged in regular rows. The cleavage planes are tiny gaps between these rows, like the gaps in a picket fence, through which the light passes. If the planes are vertical, for example, only vertically vibrating light will pass through...
...White found that his crystal was a heavy protein. In a way, this was unfortunate. In no case has the structural formula, or atomic architecture, of any protein molecule been mapped out by biochemists. It has been calculated that if a typical protein consists of 30 amino acids (protein structural units), 18 of which are different, the number of possible molecular arrangements is about 1,000,000,000,000,000,000,000,000,000. Young Dr. White made the point that the mystery of protein structure must be cleared up before scientists can understand how the hormones exert their obscure...