Interference of ultrasonic waves by a Lloyd mirror
Principle: A partial packet of radiation passes directly from a fixed ultrasonic transmitter to a fixed ultrasonic receiver. A further partial packet hits against a metal screen that is positioned parallel to the connecting line between the transmitter and receiver, and is reflected in the direction of the receiver. The two packets of radiation interfere with each other at the receiver. When the reflector is moved parallel to itself, the difference in the path lengths of the two packets changes. According to this difference, either constructive or destructive interference occurs.
Tasks: The sliding device is to be used to move the reflector screen positioned parallel to the connecting line between the transmitter and receiver parallel to itself in steps of d = (0.5 -1) mm. The reflector voltage U is to be recorded at each step. The d values of the various maxima and minima are to be determined from the U = U(d) graph and compared with the theoretically expected values.
| Artikel-Nr. | Artikelbezeichnung |
|---|---|
| P2152000 | Interference of ultrasonic waves by a Lloyd mirror |
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