A ray diagram showing refraction at the boundary between ... In this diagram, the nearest to the water side of the incoming wave slows down before the furthest side does. This causes the wave ...

speed of sound in water (m/s) × time taken (s) 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.

Light bends when travelling through a concentration gradient of sugar in water. The top layer of liquid is pure water ... In the tank, from top to bottom, the index of refraction is increasing, as in ...