Wc-3 Ultrasonic Interference
Published: Tuesday 14 March 2006 - Updated: Wednesday 30 March 2011
To demonstrate interference of two sound sources.
- Three ultrasonic transducers
- Signal generator
Click on pictures to enlarge.
Two ultrasonic transducers are connected to a signal generator set to their resonant frequency of 26kHz. A third transducer is connected to a C.R.O. and placed perpendicular to the line joining the transmitters. As the receiver is moved along this line, maxima and minima are displayed on the C.R.O.