Radioactivity is the process by which an unstable atomic nucleus loses energy by radiation. It is measured in becquerels (Bq).
1 γ = 1,000 mrem 
1 mrem = 0.001 γ 
उदाहरण: 
कन्वर्ट 15 Gamma Radiation से Millirem:
15 γ = 15,000 mrem 
| Gamma Radiation | Millirem | 
|---|---|
| 0.01 γ | 10 mrem | 
| 0.1 γ | 100 mrem | 
| 1 γ | 1,000 mrem | 
| 2 γ | 2,000 mrem | 
| 3 γ | 3,000 mrem | 
| 5 γ | 5,000 mrem | 
| 10 γ | 10,000 mrem | 
| 20 γ | 20,000 mrem | 
| 30 γ | 30,000 mrem | 
| 40 γ | 40,000 mrem | 
| 50 γ | 50,000 mrem | 
| 60 γ | 60,000 mrem | 
| 70 γ | 70,000 mrem | 
| 80 γ | 80,000 mrem | 
| 90 γ | 90,000 mrem | 
| 100 γ | 100,000 mrem | 
| 250 γ | 250,000 mrem | 
| 500 γ | 500,000 mrem | 
| 750 γ | 750,000 mrem | 
| 1000 γ | 1,000,000 mrem | 
| 10000 γ | 10,000,000 mrem | 
| 100000 γ | 100,000,000 mrem |