Word: thorium
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Dates: during 1920-1929
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...solutions. The hearts beat in vitro half an hour or so, then ceased. Professor Zwaardemaker added small amounts of potassium salt to his solution. The hearts began to beat again. They continued so for 24 hours. Potassium is weakly radioactive. Other radioactive elements gave the same stimulating results-radium, thorium, uranium, polonium...
...Professor William Draper Harkins, University of Chicago chemist. Fourteen years ago C. T. R. Wilson discovered that atoms shot at high speed through a gas, may be made to leave visible trails. Since then Professor Harkins has been trailing helium atoms. He has been busily exploding chunks of "thorium C" and other radioactive substances which shoot off atoms at the mad speed of 12,000 miles per second...
...Bureau of Standards, Washington, thorium oxide, most resistant to heat of all known substances, was melted (for the first time in history) by C. O. Fairchild and C. G. Peters. Platinum melts at a temperature of about 3,200 degrees Fahrenheit, but that does not begin to phase thorium oxide. Its melting point is probably over 6,000 degrees, which, of course, no thermometer can measure. It is used commercially in gas mantles. A gas flame does not affect it, but an electric arc may. The oxide does, however, shrink in volume at high temperatures. Thorium oxide has been utilized...
...form a saga of heroism. Not long after her marriage in 1895, Marie Curie, became interested in the experiments of Henri Becquerel on the salts of the rare metal, uranium. He had found that they emitted certain penetrating rays. Marie Curie took up this work, found that another element, thorium, behaved similarly, and that certain complex minerals also showed radioactivity, which was not, however, proportionate to the quantities of uranium or thorium in them. Pierre Curie, whose main researches up to that time had been on the physics of crystals (as was the early work of Louis Pasteur), became...
...German gynecologist announced that a fluid prepared by Professor von Weniger, of Rio de Janeiro, tested in a Berlin sanatorium, has been found a specific for tuberculosis. The fluid contains thorium, uranium, manganese and various acids, and is said to dissolve the fatty covering of the tuberculosis bacilli. Colleagues of the sponsor are sceptical of his claims...