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demonstrations:3_oscillations_and_waves:sound_waves:beat_notes:start [2020/03/06 17:58] demoroom |
demonstrations:3_oscillations_and_waves:sound_waves:beat_notes:start [2020/03/06 18:57] (current) demoroom |
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* Place the pair of tuning forks with resonance boxes on a table so that the open ends of the boxes face the audience. Now, strike both of the forks with a rubber mallet. If the adjustable fork is damped so that it's frequency is slightly different than the other, beats will be heard. | * Place the pair of tuning forks with resonance boxes on a table so that the open ends of the boxes face the audience. Now, strike both of the forks with a rubber mallet. If the adjustable fork is damped so that it's frequency is slightly different than the other, beats will be heard. | ||
- | * If you are using a LabPro, attach it to the microphone sensor and a computer with LoggerPro open. Record for a few seconds and display the graph of the beating frequencies | + | * If you are using a LabPro, attach it to the microphone sensor and a computer with LoggerPro open. Set data collection for a few seconds and display the graph of the beating frequencies |
* If you do this with a pair of organ pipes, you will need an assistant. Get your assistant to sound the non-adjustable pipe continuously, and begin sounding the adjustable pipe yourself. Adjust the pipes so that they are sounding nearly the same note, and beats should be heard. | * If you do this with a pair of organ pipes, you will need an assistant. Get your assistant to sound the non-adjustable pipe continuously, and begin sounding the adjustable pipe yourself. Adjust the pipes so that they are sounding nearly the same note, and beats should be heard. |