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H2-01: FOCUSING OF SOUND WITH CONCAVE REFLECTORS 9 years 9 months ago #802

  • zzfixk23
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ID Code: H2-01
Purpose: Demonstrate how sound waves can be focused by concave reflectors.
Description: Set the oscillator at about 3000 Hz for best results. Install speaker at the focus of one reflector and microphone at focus of second reflector; the oscilloscope views the microphone output. With the positions of all elements optimized the sound from the speaker reflects off its mirror to create a beam of sound, which is focused by the second mirror onto the microphone. All elements may be adjusted to verify the existence of foci.
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