Sentences with phrase «long radioactive atoms»
It is not clear that the authors consider how long radioactive atoms remain in our body, since we excrete them along with other atoms; the numbers below may overstate the case as the authors assume a residence time as long as 50 years.
http://pathsoflight.us/ Not exact matches
Whereas iodine - 131 has a half - life of 8 days, caesium - 134 has a half - life of 2 years and caesium - 137 is a whopping 30 years — meaning it takes that long for half of the radioactive atoms in each substance to disintegrate.