Word: uranium
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Dates: during 1930-1939
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...probably) the triton. After them, in Nature's system of elements, comes helium (atomic weight approximately 4). The helium atom's nucleus is the alpha particle which, in the full round of substances, again appears during the disintegration of the heaviest of the 92 elements-uranium, thorium, actinium, radium...
...will explain to the audience in simple terms the meaning of the electron, of micro-amperes, and the cathode rays. The properties of radium and uranium with their mysterious emanations, which man is as yet totally unable to control, will also be discussed at length and a demonstration will be offered of the versatility of vacuum tubes as the electric eye, the electric ear, and the electric touch...
...world, the discovery of even a small new source is more important than the discovery of fields of gold. Last week despatches from Ontario announced that Canadian mine experts had found a. radium mine near Wilberforce. Three years ago miners in the district discovered traces of uraninite (uranium oxide) in pegmatite, a type of rock rich in valuable minerals. Where there is a uranium deposit, mine experts have learned to look for radium. Uranium, producer of radium, is constantly emitting rays, changing its internal structure until it has disintegrated into radium...
Scratching away the loose dirt covering the rocky deposits, miners found a vein especially rich in uranium oxide. Although the extent of the discovery is not definitely known yet, investigation so far has shown it to be a strip from five to ten feet wide and over one mile in length. Uraninite is scattered throughout the deposits...
...were trying to find radium in Ontario rocks, Mme Curie's followers in Paris predicted that she will soon have another startling discovery to announce. Meanwhile she sat patiently in her tiny laboratory in the Latin Quarter in Paris, working from ten to 20 hr. a day with uranium oxide to find out more about that queer radioactive family which begins with uranium and ends as lead. Since she knows most about radium she is now studying uranium and polonium, which she discovered in 1898 and named for her native Poland...