Nothing special. But when light travels from one medium to another (from air to water for example) it is refracted. One answerer said a rainbow. A rainbow is caused by the different wavelengths (colors) of light are refracted at slightly different angles, so that we see different colors appearing at different positions.
The speed of light is constant
BENT
when light rays mave from one medium to another such as from air to water
It is known as refraction.
Osmosis ; see related link below .
The speed of light is constant
BENT
permeability
Water moves through a semipermeable membrane from an area of high to low concentration. This is called osmosis.
When light with wavelength of 589 nanometers moves through water at the temperature of 20° C, its speed is 75% of the speed of light in vacuum.
Light moves faster in Water due to the lighter density...Also due to the fact that Oil is darker in color whereas Water allows light through...
Rate of flow
when light rays mave from one medium to another such as from air to water
The pump that moves hot water through a hot water heater is the recirculation pump. This pump moves the water through the heater and back through the intake line.
Refract
It is known as refraction.
Osmosis ; see related link below .