Speed of Sound

Description

This is an easy to use piece of apparatus for determining
the speed of sound in air by simply measuring the time
taken for sound to travel a known distance.
The unit contains two sensitive microphones connected by
a long cable to control circuity that will start and stop a
Lascells millisecond or microsecond timer.
In use a sharp sound is produced and the time taken
to travel the distance between the two microphones is
recorded on the timer (not included).
A single reading can be used or the separation between
the microphones can be varied giving a range of readings
which may be plotted on a graph.
An alternative approach is to omit the timer and monitor
the outputs on a dual channel storage or PC oscilloscope.
The apparatus is supplied with a 9V PP3 battery, a 6 metre
connecting cable and full instructions.
SP4-1885