Word: layering
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...Egyptian government has been building a road for the convenience of tourists, and recently, the workmen demolished an ancient wall, shoveled away a layer of sand and exposed a 150-yd. row of massive limestone blocks, each 15 ft. long and tightly sealed with pink gypsum. It looked like some sort of pavement, but Kamal el Malakh, Egyptian archaeologist in charge of the pyramids, suspected that the stones might be the roof of a long underground chamber. The tomb of Pharaoh Cheops had never been found. It might just possibly, he thought, lie under the row of stones...
...Wulsin describes experiments, some of them for the Army, on how clothes hamper the body in keeping itself cool. They act as insulators, checking heat loss by radiation. More important, they create near the skin a layer of hot, moisture-saturated air. Sweat cannot evaporate until it has soaked through the clothing, and then its cooling effect is largely wasted. Dr. Wulsin ridicules the idea that Europeans in tropical climates should wear helmets and heavy clothing to keep from being felled by the tropical sun. The less clothing they wear, he says, the better off they...
...Layer Cakes. Ernst Graeber is a simple German foot soldier with both hands in the crumbling dike of the Eastern Front in the spring of 1944. For Graeber and his comrades, hell is not only the Russians but the stacks of German corpses emerging like an obscene layer cake from the melting snows, January casualties on top, October casualties on the bottom. When the Russians begin hitting his sector of the front with heavy artillery fire, Graeber is only too happy to snatch his first furlough in two years...
Navy oceanographers found that one-tenth of the ice melts each summer, and the ice layer's thickness is reduced to two or three meters. At present, the pack contains only 6,500 cubic miles of ice (barely enough to cover the state of Texas with a 125-ft. layer), and it is steadily shrinking. Since 1900, the thickness of the polar icecap has decreased by three feet because of higher general temperatures...
...battery is first grown in pure crystals, cut into strips, then impregnated to a depth of only one ten-thousandth of an inch with minor impurities. The top surface is treated with boron, whose atom has one less electron in its outer shell than silicon has; the bottom layer is treated with arsenic, whose atom has one more electron in its outer shell than silicon has. When light strikes near the junction of the two layers, it pushes electrons to the bottom surface, pulls "holes" (electronless gaps) to the top surface, creating a difference in voltage. The current formed...