放射性是不稳定原子核因辐射失去能量的过程。它以Becquerels（BQ）进行测量。
1 β = 1,000 mSv
1 mSv = 0.001 β
例子:
将15 beta颗粒转换为毫米：
15 β = 15,000 mSv
| beta颗粒 | 毫米 |
|---|---|
| 0.01 β | 10 mSv |
| 0.1 β | 100 mSv |
| 1 β | 1,000 mSv |
| 2 β | 2,000 mSv |
| 3 β | 3,000 mSv |
| 5 β | 5,000 mSv |
| 10 β | 10,000 mSv |
| 20 β | 20,000 mSv |
| 30 β | 30,000 mSv |
| 40 β | 40,000 mSv |
| 50 β | 50,000 mSv |
| 60 β | 60,000 mSv |
| 70 β | 70,000 mSv |
| 80 β | 80,000 mSv |
| 90 β | 90,000 mSv |
| 100 β | 100,000 mSv |
| 250 β | 250,000 mSv |
| 500 β | 500,000 mSv |
| 750 β | 750,000 mSv |
| 1000 β | 1,000,000 mSv |
| 10000 β | 10,000,000 mSv |
| 100000 β | 100,000,000 mSv |
规则