| Answer | Crossword Clue |
|---|---|
| URANIUM | Objective of Geiger counter. |
| HANS | Geiger of counter fame |
| HANS | Geiger of Geiger counter fame |
| HANS | Counter guy Geiger |
| BETARAY | Geiger-counter unit |
| HANS | Counter inventor Geiger |
| HANS | Geiger with a counter |
| DETECTOR | Geiger counter, e.g. |
| RADIATION | What a Geiger counter measures |
| HANS | Geiger who invented the Geiger counter |
