What do light waves do when going through water?

When light passes from one medium to another it undergoes refraction, which means that the angle that the light was previously moving in relative to the water will be shifted depending on the density of the medium. read more

Water refracts, absorbs and even reflects light waves. Green light is absorbed less than most others, but it too is still absorbed. The velocity of a light wave in a vacuum (space) is a tiny bit less than 3x10^8 meters per second. And in water it is about 1.031 times slower. read more

When a photon of light passes through particles with charge it may interact and create a disturbance in an electric field causing the electrons to oscillate, thereby producing more photons, the wave traveling through is a superposition of the original wave, and the photons emmited by the oscillating electrons generally have similar frequency, but lower wavelength to the original, causing a shorter wavelength. read more

Waves race across the surface of our seas and oceans and earthquakes send waves coursing through the fabric of the Earth. As different as they all seem, all of these waves have something in common – they are all oscillations that carry energy from one place to another. read more