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 Sv = 1 cps
1 cps = 1 Sv
例子:
将15 sievert转换为每秒计数：
15 Sv = 15 cps
| sievert | 每秒计数 |
|---|---|
| 0.01 Sv | 0.01 cps |
| 0.1 Sv | 0.1 cps |
| 1 Sv | 1 cps |
| 2 Sv | 2 cps |
| 3 Sv | 3 cps |
| 5 Sv | 5 cps |
| 10 Sv | 10 cps |
| 20 Sv | 20 cps |
| 30 Sv | 30 cps |
| 40 Sv | 40 cps |
| 50 Sv | 50 cps |
| 60 Sv | 60 cps |
| 70 Sv | 70 cps |
| 80 Sv | 80 cps |
| 90 Sv | 90 cps |
| 100 Sv | 100 cps |
| 250 Sv | 250 cps |
| 500 Sv | 500 cps |
| 750 Sv | 750 cps |
| 1000 Sv | 1,000 cps |
| 10000 Sv | 10,000 cps |
| 100000 Sv | 100,000 cps |
规则