> That’s just the original source of beta particles being spread around rather than the beta radiation “spreading” in some way OK, fair point. We should use

> That’s just the original source of beta particles being spread around rather than the beta radiation “spreading” in some way OK, fair point. We should use phrases like "spreading radioactivity" or "spreading radioactive contamination"? If the wording is corrected, the original point does still apply. You really wouldn't want a radioactive source stuck in your vehicle's tyre.