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Diffraction occurs when waves bend around the edge of a barrier.
the sound waves reflect back
diffraction
They start from the middle, and spread out equally.
diffraction wavelength
Diffraction occurs when waves bend around the edge of a barrier.
diffraction
the sound waves reflect back
Waves rebounding from a barrier is an example of reflection (the physics term) or an echo. If you'd care to investigate further, there is a link below.
A barrier that breaks the force of incoming waves is called a breakwater. It is also called a sea wall. Some piers and wharves are also devices that break the force of incoming waves.BREAKWATER is the barrier that breaks the force of incoming waves.
reflection
Refraction.
barrier island
Diffraction
The end facing the waves.
Diffraction
sand deposited by waves.