Principle
A plane ultrasonic wave is subjected to diffraction at single slits of various widths and at various double slits. The intensity of the diffracted and interfering partial waves are automatically recorded using a motordriven, swivel ultrasound detector and a PC.
A plane ultrasonic wave strikes a Fresnel zone plate. The sound intensity is determined as a function of the distance, using an ultrasonic detector that can be moved in the direction of the zone plate axis.
Tasks
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