| Answer | Crossword Clue |
|---|---|
| MIRA | First-known variable star |
| MIRA | First known variable star |
| MIRA | First variable star to be discovered |
| OPRAH | Star known by her first name |
| potentiometer | An instrument for measuring an electromotive force by balancing it against the potential difference produced by passing a known current through a known variable resistance |
| potentiometers | An instrument for measuring an electromotive force by balancing it against the potential difference produced by passing a known current through a known variable resistance |
