| Clue | Source | Date |
|---|---|---|
| Apparatus for accelerating electrons | The Telegraph General Knowledge | 16 Aug 2015 |
| Particle accelerator | Universal | 14 Mar 2015 |
| Particle accelerator | ||
| Particle accelerator | ||
| Particle accelerator | ||
| Electron accelerator | ||
| Electron accelerator | ||
| New apparatus for M. D.'s. | ||
| Atom smasher. | ||
| Device in which electrons are accelerated. |