| Answer | Crossword Clue |
|---|---|
| ETA | Letter next to theta |
| IOTA | Letter next to theta |
| RHO | Letter used with theta and phi to represent spherical coordinates |
| PSI | Next-to-last letter |
| WYE | Next-to-last letter |
| PSI | Next-to-last Greek letter |
| PSI | Next to last Greek letter. |
| PSI | Next to last Greek letter |
