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 mSv = 0.1 rad
1 rad = 10 mSv
例子:
将15 毫米转换为rad：
15 mSv = 1.5 rad
| 毫米 | rad |
|---|---|
| 0.01 mSv | 0.001 rad |
| 0.1 mSv | 0.01 rad |
| 1 mSv | 0.1 rad |
| 2 mSv | 0.2 rad |
| 3 mSv | 0.3 rad |
| 5 mSv | 0.5 rad |
| 10 mSv | 1 rad |
| 20 mSv | 2 rad |
| 30 mSv | 3 rad |
| 40 mSv | 4 rad |
| 50 mSv | 5 rad |
| 60 mSv | 6 rad |
| 70 mSv | 7 rad |
| 80 mSv | 8 rad |
| 90 mSv | 9 rad |
| 100 mSv | 10 rad |
| 250 mSv | 25 rad |
| 500 mSv | 50 rad |
| 750 mSv | 75 rad |
| 1000 mSv | 100 rad |
| 10000 mSv | 1,000 rad |
| 100000 mSv | 10,000 rad |
规则