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| Use a microphone and oscilloscope to display the waveforms of 256, 512, and 1024 Hz tuning forks. | Use a microphone and an oscilloscope to display the waveforms of tuning forks of varying frequencies. |
[:PiraScheme#Mechanics: Table of Mechanics Demonstration] |
[:MEEquipmentList: List of Mechanics Equipment & Supplies] |
[:Demonstrations:Lecture Demonstrations] |
Tuning Fork Waveforms, 3D46.16
Topic and Concept:
Instruments, [:Instruments#TuningFork: 3D46. Tuning Forks]
Location:
Cabinet: Waves and Sound (WS)
Bay: A1
Shelf: #1
attachment:TuningForkOscilliscope18-400.jpg
Abstract:
Use a microphone and an oscilloscope to display the waveforms of tuning forks of varying frequencies.
Equipment |
Location |
ID Number |
|
|
|
Tuning Forks |
WS, Bay A1, Shelf #1] |
|
Oscilloscope |
|
|
Mic and Pre-Amplifier |
|
|
Important Setup Notes:
- There are three different mics that can be used for this demonstration (see photos below). You need only pick one.
Setup and Procedure:
- Connect the mic to the pre-amplifier with a the appropriate cable.
- Connect the pre-amplifier to the oscilloscope input with a coaxial cable.
- Plug in the oscilloscope and the pre-amplifier. Switch these on.
- Place the tuning fork nearby and strike with a mallet.
- Position the mic near the vibrating tuning fork so that the signal is displayed clearly on the oscilloscope. The display range may need to be adjusted.
- Try displaying the signal for other frequencies (other tuning forks).
Cautions, Warnings, or Safety Concerns:
- N/A
Discussion:
Discuss the physics behind the demonstration, explaining some of the various steps of the demonstration when appropriate.
attachment:TuningForkOscilliscope01-250.jpg |
attachment:TuningForkOscilliscope02-250.jpg |
attachment:TuningForkOscilliscope03-250.jpg |
attachment:TuningForkOscilliscope04-250.jpg |
attachment:TuningForkOscilliscope05-250.jpg |
attachment:TuningForkOscilliscope06-250.jpg |
attachment:TuningForkOscilliscope07-250.jpg |
attachment:TuningForkOscilliscope09-250.jpg |
attachment:TuningForkOscilliscope10-250.jpg |
attachment:TuningForkOscilliscope12-250.jpg |
attachment:TuningForkOscilliscope13-250.jpg |
attachment:TuningForkOscilliscope14-250.jpg |
attachment:TuningForkOscilliscope15-250.jpg |
attachment:TuningForkOscilliscope16-250.jpg |
attachment:TuningForkOscilliscope17-250.jpg |
attachment:TuningForkOscilliscope19-250.jpg |
attachment:TuningForkOscilliscope20-250.jpg |
attachment:TuningForkOscilliscope21-250.jpg |
attachment:TuningForks01-250.jpg |
attachment:TuningForks05-250.jpg |
Videos:
[https://www.youtube.com/user/LectureDemostrations/videos?view=1 Lecture Demonstration's Youtube Channel]
References:
- List any references
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