Item no.: XWV810010
This dual purpose apparatus provides a compact facility for the measurement of the velocity of sound in air and also for the analysis of standing waves. It requires an audio signal generator and a dual beam oscilloscope with power being provided by a PP3 9V battery.
To make a direct measurement of the speed of sound the sensitive microphone is moved against the scale while noting the two traces on the CRO which gives the time delay between successive waves. The value is found from the measurements of time and distance.
With the reflector in place a standing wave can be generated. Nodes and antinodes can easily be seen from the amplitude variations on the CRO.
Dimensions: 500 x 150 x 100mm