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The speed of light, in vacuum, is exactly 299,792,458 metres per second or 299,792.458 kilometres per second. The values are exact because this is how a metre is defined.

The relationship between a kilometre and a mile is not exact, so it is not possible to give an exact figure for the speed in miles. It is approximately 186,282 miles per second.

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Q: What exactly is speed of light in miles and kilometers?
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How many miles is the speed of light in kph?

miles... in kph??? Anyway, the speed of light is 300,000 kilometers/second; you can convert that to whatever unit you want. For example, to convert to kilometers/hour, multiply by 3600.


What is the speed of light in a vacuum?

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


How much speed of light per seconde?

300,000 kilometers (186,282 miles) per second.


What is the sspeed of light?

The speed of light in a vacuum is 300.000 kilometers per second, that's 671.000.000 miles per hour.


What is the speed of light in kilometers per hour?

The speed of light is 1,079,252,848.8 kilometers per hour.


How fast does light go in one second?

The speed of light is 186,000 miles per second (approximately 300,000 kilometers a second).


What is speed of light in miles per year?

It is the same speed all year. If you meant to ask: "How far does the speed of light go in a year?" The Answer is: about 6 trillion miles. EDIT: Light travels 9.454.254.955.488 kilometers per year which translates to 5.874.601.673.407 miles per year. That's about 9.5 trillion kilometers or about 5.9 trillion miles. This distance is called a light-year.


How many miles per hour does it take for light to travel from the sun to the earth?

In a vacuum, the speed of light is always 670,616,629 miles per hour (300,000 kilometers per second). The speed of light changes as it enters a different medium, such as Earth's atmosphere, but the change in speed is essentially negligible.


What are the values of the speed of light?

the speed of light is 186,000 miles a second it takes the light from the sun takes 7 minuates and 59 seconds to reach earth if the sun explodes it wont be known until the light reaches the earth.


Why is the phrase the speed of light is 300.000 miles an hour?

Not only is the question constructed meaninglessly, but it includes a completely false statement of 'fact'. The speed of light is not 300.000 miles an hour. It's more like 300,000 kilometers per second.


What is the speed of light in miles per hour if tHE speed of the light is 3.108 miles per second?

The speed of the light is 3.10^8 miles per second.what is the speed in miles per hour


What is speed of light in miles?

The Speed of Light is 186,000 miles per second.