A ray diagram showing refraction at the boundary between air and glass Refraction can cause optical illusions as the light waves appear to come from a different position to their actual source.

The diagram shows that when water waves are reflected their direction changes, but their wavelength and frequency remain unchanged. Refraction is the change in direction of a wave as it travels ...

Keywords acoustics, sound waves, refraction, human ear, frequency range, echo, reverberation, sound transmission, electrical technology Email us at [email protected] if you have questions about ...