This is a school Science Experiment for demonstrating the properties of waves on an Oscilloscope. The following standard demonstration is used in many schools and colleges to demonstrate the basic principles of waves.
Demonstration equiptment
Oscillator, oscilloscope, and loudspeaker.
Table of contents |
2 Demonstrating the Amplitude and Frequency 3 See also |
Setting Up
A signal generator is connected to an oscilloscope & a loudspeaker. Some signal generators have two outputs:
- one marked with a low value impedance e.g. 8 Ω
- the other marked with a high value e.g 600 Ω.
The oscilloscope is adjusted so that there is a clear sine wave trace that extend for about half the screen and has two or three clear waves visible when the signal generator is set at a medium frequency and mid volume.
The advantage of setting the demonstration up in this manner over the more traditional plugging a microphone into the input of the scope, is that the signal generator produces perfect sine waves which keeps everything nice and straightforward.
Demonstrating the Amplitude and Frequency
''Amplitude and Frequency
''See also