Word: liquid
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Dates: during 1930-1939
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...made motion pictures of pigeons, humming birds and even houseflies in flight; of lamp bulbs breaking under hammer blows; of craters formed on a liquid surface by a falling drop of milk; of soap bubbles breaking; of falling cats twisting in mid-air to land on their feet...
...which did not noticeably affect the thyroid or the sex glands, but which had a marked effect on the mammary glands. It started milk production not only in normal female guinea pigs but also in spayed females and males. In pigeons it thickened the crop sac, which provides a liquid ("pigeon milk") with which pigeons feed their young. Riddle called this new hormone prolactin...
Pure science gave way to practical technology when one of Dr. Langmuir's coworkers, Dr. Katharine Burr Blodgett, found that a layer of transparent liquid soap, with a thickness of one-quarter the average wavelength of white light (about 4/1,000,000 in.), made the glass to all intents and purposes invisible. Reason: glass is visible because of the light reflected from its surface; with a soap film there are two reflections, one from the glass and one from the soap; by spacing the two surfaces properly it is possible to get the "crest" of a light wave bouncing...
From vast, subterranean Michigan streams Dow Chemical Co. pumps brackish water, produces aspirin, phenol, ammonia, chlorine. From the vast Pacific, Great Western Electro-Chemical Co. dredges salt, manufactures liquid chlorine, caustic soda, caustic potash. In a corporate chemical reaction last month these two companies decided to combine. Last week their stockholders approved the process. Catalyst of the consolidation was Willard Henry Dow, elder son of the late, great Chemist Herbert Henry Dow. No chemical genius but an efficient business executive, Willard Dow graduated from University of Michigan in 1919, went to work for his father as a department head, succeeded...
...specimen of rock under test is placed in a thick steel cylinder. An hydraulic confining pressure is applied through a liquid, or at very high pressures through lead. The highest confining pressure used are about 300,000 pounds per square inch. In addition, a direct, differential pressure is exerted on the specimen by a steel piston. Different pressure used attain more than 1.500,000 pounds per square inch...