| Answer | Crossword Clue |
|---|---|
| HEIR | Focus of one who's willing? |
| quadrupole | A device using such an arrangement directed at one point to focus beams of subatomic particles |
| quadrupoles | A device using such an arrangement directed at one point to focus beams of subatomic particles |
| saccade | the series of small, jerky movements of the eyes when changing focus from one point to another |
| aberrations | The failure of rays to converge at one focus because of limitations or defects in a lens or mirror |
| aberration | The failure of rays to converge at one focus because of limitations or defects in a lens or mirror |
