radiation
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TIL that in Goiânia, Brazil, in 1987 a radiotherapy device was stolen from an abandoned hospital. The people who found it broke it open, exposing the 93 g of radioactive caesium chloride and leading to the contamination of 250 people, 20 of whom experienced radiation sickness and 4 of whom died
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whatilearned
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TIL the United States government performed many radiation experiments that included feeding radioactive materials to mentally disabled children, exposing impoverished pregnant women to radioactive iron, various experiments involving exposure to prisoners, and on the dead without family’s permission.
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whatilearned
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TIL about “Low Background Steel” which was steel produced before the first atomic bomb tests so not contaminated with radionuclides that came from the increased background radiation. This steel was needed to produce Geiger counters and sensitive medical equipment. Shipwrecks were a popular source.
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whatilearned
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TIL the Soviet Union captured the first images of the far side of the moon in 1959 using radiation-resistant film recovered from a downed US spy balloon. This technology was essential to protect the film from radiation in space, and the Soviets were unable to produce their own at the time.
by
whatilearned
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