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The speed of light is always the same as long as it's traveling through the same

medium. But its speed is different in different media, and those are all less than

its speed in vacuum.

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Geoffrey Huels

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2y ago
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Q: Does light always travel at the same speed?
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Related questions

What happens to speed of light when they travel through a vacuum?

In a vacuum, light always travels at the same speed, about 300 000 kilometers per second.


Will your head lights work at the speed of light?

Hypothetically, yes. The speed of light is relative to the observer, so no matter how fast one is traveling, light always appears to travel at the same speed.


Why do waves of different wavelengths travel at the same speed?

All light travel at the same speed.


How fast different colors of light travel through a vacuum?

They all travel through a vacuum at the same speed - The speed of light.


Does red light travel faster than blue light?

No. All colors travel at the same speed. It is called "the speed of light".


What do all types electromagnetic radiation have in common?

They travel at the speed of light (c = 3*108 m/s)


Do gamma rays travel the speed of light?

Gamma rays travel exactly the speed of light because gamma rays are light


Does sound and light travel at the same speed?

no, light is faster


X-rays travel in vacuum at a higher speed than the visible light?

No. Both travel at exactly the same speed. The speed of light.


Is speed of light in vacuum and medium same?

No, light in a medium will travel at a slower speed.


What is it that all electromagnetic waves do the same?

All electromagnetic waves travel at the same speed in a vacuum -- the speed of light.


Does the color of a laser affect the velocity?

Light always travels at the same speed, the speed of light. At least in vacuum. In a medium light will travel at a slower pace, and the speed decrease is dependent on the color (wavelength) of the light. This is because the refractive index (which determines how fast light can travel through a medium) is color dependent.