Word: barium
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Dates: during 1960-1969
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...repeatedly bombarded the element uranium with neutrons in an effort to create new man-made radioactive isotopes. According to the theories of the time, the neutrons should have combined with the nucleus of the uranium atoms to produce heavier, unstable isotopes. Yet he kept finding lighter atoms of barium. Gradually, the inexplicable presence of the barium, which is only about half the weight of uranium, persuaded Hahn that he had done what had always been considered impossible: he had split the atom...
...unfading ceramic that also comes in green, lavender, yellow and maroon. Josiah fired more than 10,000 experiments in his kilns. What he was after was a material that could be impregnated with color throughout, rather than simply receive a surface glaze. And in cauk, a form of barium sulphate, Josiah found what he wanted. Jasper ware grew so popular that the English used it for shoebuckles, chessmen, perfume vials, bell pulls, architectural ornaments, even a mortar and pestle. Most famous of all Josiah's jasper ware was his limited edition of the Portland vase, after a Greek vase...
...Utah. Several minutes before the end, the pilot reported a fire burning out of control in the baggage compartment, and that his plane was coming apart in the air. Gathering the wreckage, which was strewn over 28 miles of rugged country, the CAB's investigators noticed traces of barium ash on some of the fragments. Since the only barium that could have burned was in flares carried in the baggage compartment, the bureau at once ordered all DC-6s to remove their flares. Eighteen days later, another DC-6 had a baggage-compartment fire, near Gallup...
...suspension of clay and various chemicals in water, differs in formula depending on whether it is being used to lubricate a drill bit, float rock chips out of the way of the bit, or seal a shaft against blast. To plug a well, "weighted mud" of powdered clay and barium sulfates mixed to the consistency of cake batter is used...