Word: layer
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...Freshmen skating in the Yard last night set a new high in undergraduate ingenuity. The skaters, Munroe A. Winter '42 and Whitall N. Perry '42, both of Hollis Hall, taking advantage of the layer of ice left on the ground by the freak weather of Wednesday, glided between Gray's and Weld for over an hour and a half...
...thunder was caused by a layer of cold air overlying the warm wind, Professor Brooks said...
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...
Laboratory tests duplicate the pressure conditions in any part of the earth's outer crust--a granite layer extending down 30 to 50 miles. In some of the tests temperatures as high as 900 degrees Fahrenheit were employed...
...corps of carpenters constructing wooden coffins saw a mass of mud moving down a valley, were themselves buried alive. Mothers tried to herd their young to safety as the slithering ground under their feet swept whole families to death. One seven-acre area was covered by a 20-ft. layer of clay...