Determine the value of the number ABCD
Determine the value of the number ABCDCorrect answers: 58
The first user who solved this task is Djordje Timotijevic.
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Radioisotopes exportedIn 1947, radioactive isotopes produced from phosphorus-31, arrived at Canberra, Australia, being the first export of radioisotopes from the U.S. They were to be used in Australia's X-ray and medical laboratory. Oak Ridge National Laboratory in Oak Ridge, Tenn., produced the isotopes as a by-product of the chain reaction in a uranium pile. They travelled by airplane via San Francisco, California. |