20 ms·
It depends what you mean by radioactivity. There are particles that rarely ever interact with matter, like the neutrinos, and are virtually impossible to detect
by beebmam 5y ago
It depends what you mean by radioactivity. There are particles that rarely ever interact with matter, like the neutrinos, and are virtually impossible to detect except in highly sensitive experimental conditions.
- stjohnswarts 5y agoI think in the context of the conversations it's obvious that we're talking about the kinds of radiation that are dangerous to animals (including humans)
- kergonath 5y agoSure. The nice thing with these particles is that they do not cause any health concern. Luckily, because we are constantly bombarded with billions of them. What is relevant here is either alpha (stopped by a couple of cm of air), beta (stopped by a sheet of plastic, heavy clothing, or a couple of micrometers of metal) and gamma radiation. These are the radiations we measure to monitor fallout.