Sv â rad
Radiation was discovered in 1896 by Henri Becquerel. Marie Curie coined the term "radioactivity" in 1898.
After Hiroshima (1945), scientists realized they needed radiation units. The sievert was adopted internationally in 1980.
Ancient Romans used radioactive mineral springs for "healing" - the Radon Hot Springs in Montana have been used for centuries.
Nuclear power workers wear dosimeters that track cumulative radiation exposure to ensure safety limits aren't exceeded.
Why did the radiation go to the party? It wanted to be the life of the nucleus! â˘ď¸