Rubens Tube Amplifier
This is a small amplifier that attaches directly to the Lascells Rubens tube. It comes complete with 9V power supply and 3.5mm connection cable.
It allows music form MP3 players, iPods and computers to be played adding an extra twist to Rubens tube demonstrations.
Order Code: XWV830500 Manufacturer Code: LA50-552
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Speed of Sound
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
Order Code: XWV120010 Manufacturer Code: LA50-560