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Interference of acoustic waves, stationary waves and diffraction at a slot with PC interface
Principle:
• Two acoustic sources emit waves of the same frequency and if their distance is a multiple of the wavelength, an interference structure becomes apparent in the space where the waves are superimposed.
• An acoustic wave impinges perpendicularly onto a reflector, the incident and the reflected wave are superimposed to a stationary wave. In case of reflection, a pressure antinode will always occur at the point of reflection.
• An acoustic wave impinges on a sufficiently narrow slot, it is diffracted into the geometrical shadow spaces. The diffraction and the interference pattern occurring behind the slot can be explained by means of the Huygens-Fresnel principle and confirm the wave characteristics of sound.
Tasks:
1. To measure the interference of acoustic waves.
2. To analyze the reflection of acoustic waves - stationary waves.
3. To measure the diffraction at a slot of acoustic waves.
| Artikel-Nr. | Artikelbezeichnung |
|---|---|
| P2150911 | Interference of acoustic waves, stationary waves and diffraction at a slot with PC interface |
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