Answer | Crossword Clue |
---|---|
phonoscopes | PHONOSCOPE, a device that renders visible the vibrations of sound waves |
phonoscope | a device that renders visible the vibrations of sound waves |
reflectors | An object or device that reflects radio waves, seismic vibrations, sound, or other waves |
reflector | An object or device that reflects radio waves, seismic vibrations, sound, or other waves |