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.

Sound waves travel at 1,500 m/s in water. The time between sending and receiving a sonar sound pulse that detects a submarine on the seabed is 0.12 s. Calculate how far below the ship the ...

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 ...