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it travels at c (speed of light in a vacuum)

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14y ago

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When is light not refracted?

Light is not refracted when while it passes through a vacuum, or through any uniform material.


What happens to the speed of light when it passes through water?

It slows from c to c/n where n is the refractive index of water


What happens when white light passes through a strong magnetic field?

I have the impression that light is not affected by magnetic fields - at least in a vacuum. If traveling through other substances, the magnetic field can change the light's polarization.


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What happens when light passes through a cylindrical lens?

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The light refracts or bend .


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What happens to light when it scatters?

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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.


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It shows color.


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