| Answer | Crossword Clue |
|---|---|
| ETA | Efficiency symbol, in physics |
| ETAS | Efficiency symbols, in physics |
| RHO | Density symbol, in physics |
| OMEGA | Resistance symbol, in physics |
| RHO | Density symbol, in Physics |
| ETA | Viscosity symbol, in physics |
| ETA | Refractive-index symbol, in physics |
| PSI | Wave function symbol in physics |
| RHO | Symbol for density in physics equations |
