0
The speed of light is 299 792 458 m s-1.
This is one of the very few exact physical constants; it is so by definition.
This enables the meter to be determined by it and the second.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is the exact speed measurement of light?
The speed of light in vacuum is 299,792,458 meters (186,282 miles) per second.
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.
What is the exact value of the speed of light in a vacuum?
The speed of light in a vacuum is 299 792 458 meters per second or 983,571,056.43045 feet per second or 186,282.397 miles per second or 670,616,629.2 miles per hour.
How does the average speed of light glass compare with its speed in a vacuum?
About 2/3 its speed in a vacuum.
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.
What is the exact speed measurement of light?
The speed of light in vacuum is 299,792,458 meters (186,282 miles) per second.
What is the exact speed of light?
The exact speed of light in a vacuum is approximately 299,792 kilometers per second or about 186,282 miles per second.
What happens to speed of light from vacuum to glass?
The speed of light is greatest in vacuum, and somewhat less in any material medium. The exact number depends on the individual material. They're all different.
How does fast light travel?
The speed of light is 299,792,458 meters per second through vacuum. It's somewhat lessin any kind of material stuff ... the exact speed depends on what stuff it's moving through.The speed of light in a vacuum is 300,000 kilometers/second.
What is the exert speed of light?
The exact speed of light in vacuum is 299,792,458 meters per second. It's something different in every different material stuff.
How fast is the speed of Light in a gas?
The speed of light in a gas is slightly slower than its speed in a vacuum. This is because light interacts with the particles in the gas, which can slow it down. The exact speed of light in a specific gas will depend on the composition and density of the gas.
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.
What is the exact value of the speed of light in a vacuum?
The speed of light in a vacuum is 299 792 458 meters per second or 983,571,056.43045 feet per second or 186,282.397 miles per second or 670,616,629.2 miles per hour.
Compare and contrast the speed in water and in the glass?
The speed of light in water is slower than in a vacuum. This is due to the higher refractive index of water compared to air, causing light to bend more in water. In a glass, the speed of light is also slower compared to a vacuum, though the exact speed will depend on the composition of the glass.
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.
IS electromagnetic waves travel faster than speed of light?
No, electromagnetic waves, including light, always travel at the speed of light in a vacuum, which is approximately 299,792 kilometers per second. Nothing with mass can travel at or faster than the speed of light in a vacuum.
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.
