| Answer | Crossword Clue |
|---|---|
| phonoscopes | PHONOSCOPE, a device that renders visible the vibrations of sound waves |
| Answer | Crossword Clue |
|---|---|
| phonoscopes | PHONOSCOPE, a device that renders visible the vibrations of sound waves |
Crossword
a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.