Word: heatedly
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Dates: during 1950-1959
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...sultry air lay heavy and oppressive over central Michigan. Scudding up from the south, dark cumulus clouds reared their anvil-shaped heads into a leaden overcast. The flatlands sweltered as the temperature climbed to 90°. Aloft, cool winds raced down from the northern Rockies, rode over the blanketing heat. The black, moisture-laden thunderheads ballooned, formed a storm line which writhed eastward toward the shores of Lake Huron and Lake Erie. Suddenly, swirling like water draining from some giant bathtub, the tornadoes spun out of the clouds and swept across the land...
...engines often reach temperatures3,700° Fahrenheit at the core of their blast hot enough to burn ordinary steel like paper. The planes themselves are approaching speeds at which aluminum aircraft skins would lose their strength, then melt. Nor is heat the only problem. Building of the first atomic reactors disclosed the fact that most metals absorb or "eat up" the atomic neutrons needed to provide the fission and motive power...
Until recently, one of the scarcest and hardest-sought metals was columbium. Although not extraordinarily tough in itself, it mixes with steel, nickel and other metals to make alloys that can withstand the tremendous jet heat. The U.S. must depend on Africa, however, for 95% of its limited supply. Accordingly, a big hunt was started for substitutes and yielded the most promising wonder metal of all-titanium...
...promising field of powder metallurgy is rapidly enlarging its horizons: jet rotor blades of exceptional hardness and heat resistance are now being made at of powdered titanium carbide and a metallic binder fused under tremendous heat and pressure. The big unsolved problem is cost: an incredible $30,000 per ton v. $780 to $1,020 for stainless steel. But as Wilson's program expands production, nobody doubts that U.S. ingenuity and research will whittle down the cost, just as magnesium's cost has been whittled from $5 in 1915 to 27? a pound in 1953. In that prospect...
...Done with Neutrons. Breeding atomic fuel, said Dean, works in somewhat the same way. Natural uranium contains only .7% of fissionable U-235. Nearly all the rest ot it is nonfissionable U-238. But when U-235 fissions (splits in two) and produces heat, it also yields free neutrons. Some of these are needed to keep the reaction going; they make other U-235 atoms split. Some neutrons escape or are absorbed by structural materials in the reactor. The rest of the neutrons enter the nuclei of U-238 atoms and make them turn into plutonium, which is just...