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Radioactivitad

Ord Wikipedia
Signal da privel D-W005 tenor DIN 4844-2: Avertiment da materials radioactivs u radis ionisants (era sin recipients armads)

La radioactivitad digl ambient ei natirala u artificiala. La radioactivitad natirala cumprenda isotops della seria d'uranium-238 e da thorium-232 ed aunc potassium-40. La radioactivitad artificial deriva digls tirs nuclears digls onns ca. 1956-1963 e digls accidents nuclears (per exempel Chernobyl, 1986). Quels experiments ed accidents han relaschau plutonium, Cs-137 e Sr-90 (dus products da fissiun) ed aunc americium-241 (la figlia digl Pu-241).

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