Physics 20 Resources

 

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Reflected Waves Diagrams

 

1. When water waves strike a barrier straight on, they reflect back along the same path.

waves striking a barrier at right angles

 

2. When incident waves strike a barrier at an angle they reflect off at the same angle.

waves striking a barrier at an angle
The angle between the normal and the incident wave is called the angle of incidence.
The angle between the normal and the reflected wave is the angle of reflection.

The angle of incidence (i) equals the angle of reflection (r).

3. When incident waves strike a parabolic surface, the waves reflect to a focal point.

waves reflecting off parabolic barrier

 

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