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The velocity of light is greatest when travelling through a vacuum.
When travelling through something else, a glass material say, then its velocity is slower.
The refractive index is the ratio of the speed of light in a vacuum to the speed of light in that substance. For example light travels in a vacuum about 1.3 times as fast as in water, so we say water has a refractive index of 1.3.
And it is likely that the velocity in the glass will be different at different wavelengths of light.
What else can I help you with?
How Light passes through water?
It happens by the refraction of light.
What happens when light passes through a cylindrical lens?
sh@@ happens
What happens when light passes through lens?
The light refracts or bend .
What happens to light when it passes through different substances?
it refracts
What happens to light when it scatters?
It is redirected as it passes through a medium
What happens when light scatters?
It is redirected as it passes through a medium.
What kind of light is the bending of a ray of light when it passes through something?
Refracted light
What happens when light passes through vacuum?
it travels at c (speed of light in a vacuum)
What happens during refraction of light as light passes through a prism?
It shows color.
What happens to light when it passes through a rectangular block?
it makes a rainbow!
What happens to light that passes through a prism?
the colors of light seperates to show all the colors of light.
What happens when light passes through a prism and is refracted?
When light passes through a prism, it is refracted, which means it is bent or separated into different colors. This happens because light waves travel at different speeds through different materials, causing them to change direction.
