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The speed of light in a vacuum is 186,282.397 miles per second or 670,616,629.2 miles per hour.

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9y ago
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12y ago

300,000 kilometers per second.

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Q: What is the speed of light in a vacuum?
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Related questions

Why is the speed of light limited in a vacuum?

The speed of light is not limited in a vacuum - the speed of light is fastest in a vacuum. But that is what Einstein called the "Cosmic Speed Limit" - nothing can move faster than the speed of light in a vacuum, or even quite asfast.


Does the speed of light change in a vacuum?

No, not as long as the light stays in vacuum.No, it does not. That is where it has its maximum speed.


What happens to frequency does the speed of light ever change?

The speed of light IN A VACUUM is always the same. In substances other than the vacuum, the speed of light is usually slower than in a vacuum.


What is the speed of light of a vacuum?

In vacuum, the speed is 299,792,458 meters per second.


How does the average speed of light glass compare with its speed in a vacuum?

About 2/3 its speed in a vacuum.


What percentage of the speed of light in vacuum is the speed of light in water?

The speed of light in water is about 75% of the speed of light in a vacuum. This is due to the higher refractive index of water, which slows down the speed of light as it passes through the medium.


What is the speed of light in miles per second in a vacuum?

The speed of light is 186,000 miles per second in a vacuum.


The speed of light indicates how fast light can travel in a vacuum?

Yes ... in a vacuum.


What is the speed of light on the moon?

The speed of light in vacuum is the same everywhere.


How does the speed of light change as light change as light moves from a distant star toward earth in the vacuum of space?

As long as it remains in the vacuum in the vacuum, the speed of the light doesn't change at all.


How fast can the speed of light go?

Light is fastest in a vacuum; in this case, its speed is about 300,000,000 meters/second.Light is fastest in a vacuum; in this case, its speed is about 300,000,000 meters/second.Light is fastest in a vacuum; in this case, its speed is about 300,000,000 meters/second.Light is fastest in a vacuum; in this case, its speed is about 300,000,000 meters/second.


How can the nature of the source of light wave can influence the speed of light in a vacuum?

The speed of light in a vacuum is constant at about 3 x 10^8 meters per second. The nature of the source of the light wave does not directly influence the speed of light in a vacuum. The speed of light is determined by physical constants in the vacuum, such as the permeability and permittivity of free space.