• Contents:
• 1 Ultrasonic transmitter, on stand rod
• 1 Ultrasonic receiver, on stand rod
• 1 Projection screen
• 1 Ruler, 1 m
• Error 2023

Equipment set for experiments on geometric and wave-mechanical acoustics.
Based on the piezo-effect discovered by the Curie brothers, an AC voltage is applied to a piezo-electric body causing it to oscillate. Sound waves can also be used to excite the body and the oscillations can be converted into an electrical voltage signal.