It will usually change. Usually you would expect the speed to decrease, but note that the "optical density", i.e. the index of refraction, is not entirely related to the density (as defined by mass/volume).
The refractive index of the material is defined as the ratio of the speed of light in a vacuum
to the speed of light in that material.
The higher the refractive index of any medium, the slower the speed of light in that medium.
Speed of light in a medium = c / (refractive index of the medium) .
' c ' = speed of light in vacuum = 299,792,458 meters per second.
Higher index of refraction basically means that the light moves slower in that material.
It travels at a speed which is less than its speed in vacuum.
The ray of light bends towards the normal.
true
Light travels faster in liquid material with a higher index or reflection.
Index Of Refraction
A medium with a higher index of refraction, like diamond, is more dense than the medium with a lower index of refraction, like air. If the ray of light is moving from the less dense medium (lower index of refraction), to a more dense (higher index of refraction) the ray of light bends TOWARDS the normal.
The ray of light bends towards the normal.
true
Light travels faster in liquid material with a higher index or reflection.
Index Of Refraction
Also 1.5. That's how the index of refraction is defined.
well kids, the answer is INDEX OF REFRACTION. (: science question on my homework
atomic packing
A medium with a higher index of refraction, like diamond, is more dense than the medium with a lower index of refraction, like air. If the ray of light is moving from the less dense medium (lower index of refraction), to a more dense (higher index of refraction) the ray of light bends TOWARDS the normal.
n(index of refraction) = c(speed of light in a vacuum)/v(speed of material in the sebstance)
true
2 (no units)
Index of refraction