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 nGy = 2.5800e-13 C/kg
1 C/kg = 3,876,000,000,000 nGy
例子:
将15 纳米转换为暴露（C/kg）：
15 nGy = 3.8700e-12 C/kg
| 纳米 | 暴露（C/kg） |
|---|---|
| 0.01 nGy | 2.5800e-15 C/kg |
| 0.1 nGy | 2.5800e-14 C/kg |
| 1 nGy | 2.5800e-13 C/kg |
| 2 nGy | 5.1600e-13 C/kg |
| 3 nGy | 7.7399e-13 C/kg |
| 5 nGy | 1.2900e-12 C/kg |
| 10 nGy | 2.5800e-12 C/kg |
| 20 nGy | 5.1600e-12 C/kg |
| 30 nGy | 7.7399e-12 C/kg |
| 40 nGy | 1.0320e-11 C/kg |
| 50 nGy | 1.2900e-11 C/kg |
| 60 nGy | 1.5480e-11 C/kg |
| 70 nGy | 1.8060e-11 C/kg |
| 80 nGy | 2.0640e-11 C/kg |
| 90 nGy | 2.3220e-11 C/kg |
| 100 nGy | 2.5800e-11 C/kg |
| 250 nGy | 6.4499e-11 C/kg |
| 500 nGy | 1.2900e-10 C/kg |
| 750 nGy | 1.9350e-10 C/kg |
| 1000 nGy | 2.5800e-10 C/kg |
| 10000 nGy | 2.5800e-9 C/kg |
| 100000 nGy | 2.5800e-8 C/kg |
规则