Jeulin 223 008 Mode D'emploi page 61

Ultrasounds
Moduson table
Ref :
223 008
Observations of the curve:
What is the nature of the curve?
 Ultrasonic absorption:
Complementary experiment.
The mirror is turned over so that the foam-coated side faces the ultrasonic beam from the
transmitter.
For a few values of the angle i, try to obtain the corresponding values of r.
What do you observe concerning the signal received by the receiver?
2.3 Step 3: Exploitation of the results
 Law of reflection
Write the law of reflection that can be derived from the measurements performed.
 Ultrasonic absorption
What conclusion can you make?
Note: The experiment can be repeated by using the second recess for the displacement of the
transmitter or (and) of the receiver.
3 Interference of ultrasonic waves
Introduction: The purpose of the experiment is to perform an experiment on ultrasonic
interference and to compare the experimental measurements obtained with the theoretical
results derived from the wave model of the phenomenon.
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