Ultrasonic Michelson-Interferometer
Principle: A "semi-permeable" membrane divides an ultrasonic wave into two partial packets which travel at right angles to each other. They are subsequently reflected at different hard metal reflectors, one of which is fixed in position, and the other of which can be displaced in the direction of the beam, before being reunited. Shifting the displaceable reflector changes the path length of the corresponding packet, so that superpositioning of the reunited partial packets gives maxima and minima of the alternating sound pressure according to the difference in the distance travelled. The wavelength of the ultrasound can be determined from these.
Tasks:
1. Determine the intensity of the alternating sound pressure in dependence on the displacement of one of the reflectors.
2. Calculate the wavelength of the ultrasound from the measurement curve.
| Artikel-Nr. | Artikelbezeichnung |
|---|---|
| P2152200 | Ultrasonic Michelson-Interferometer |
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