Word: layerings
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Trapped Poison. An inversion layer of warm air domed over the region the day before Thanksgiving, trapping the dirty air beneath it. Westerly winds, which normally whisk away 'the 17.6 million lbs. of pollutants that New York City alone spews into the air each day, were nowhere to be found. By Thanksgiving, despite the holiday inactivity, New York's pollution reached five times its normal level of noxious carbon monoxide from cars, soot and fly ash from chimneys and potentially deadly sulphur dioxide from soft fuel oil and coal fires...
...reduce most factory fumes and did little to deter motorists from flocking to the city for the traditional post-Thanksgiving buying splurge. The break finally came, not because of the alert measures, but from evening showers that washed the dirty air. By week's end the inversion layer was breaking up as the westerly wind returned to sweep clean the skies...
Computers & Rockets. Scientists have devised countless ways to make use of the controlled output of fluidic circuits. A fluidic guidance system can control the course of a torpedo by shooting out jets of gas or sucking in water. This distorts the surrounding boundary layer of water, changes its frictional effects and causes the torpedo to turn. In a rocket flying through the atmosphere, the control jets of a fluidic stabilization system are attached to vents in the rocket's nose cone. As the attitude of the rocket be gins to change, the nose vents gulp in air at different...
Also for Paddyfields. Trial plantings of cabbage yielded 505 crates per acre of asphalt-layered soil, compared with 260 crates for untreated acres. Potato yields rose 50% and cucumbers as much as 100%. The economics were even more impressive. With cabbage selling at $2 per crate, the increased yield would bring a farmer added revenue of $490 per acre, allowing him to pay off the cost of the asphalt layer-about $225 per acre-with his first harvest. Furthermore, Hansen and Erickson estimate, the underground asphalt will not deteriorate for at least 15 years...
...lifts a 2-ft.-deep strip of earth from the field, sprays warm liquid asphalt underneath it, and then allows the soil to settle back in place. The asphalt solidifies immediately into a 34-in.-wide, ⅛-in.-thick ribbon. Adjacent ribbons are overlapped to ensure that the entire layer will be watertight. To reduce costs, Engineer Hansen is now working on a machine that will lay down lO-ft.-wide strips...