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