What happened to the radiation that was supposed to last thousands of years in Hiroshima (1945)?

I have some knowledge about nuclear physics but not a graduate on that subject. So please bear with me if I get the terms slightly wrong and feel free to correct technical details. My flatmate has a Masters in Nuclear Physics and I helped write his thesis.

What happened to the radiation that was supposed to last thousands of years in Hiroshima (1945)?

Annonser