Is the Speed of Light Really 3000 km/s?

Km/s. In summary, the speed of light is 299,792 km/s in a vacuum and slower in other media. It is also important to note that the correct value is 299,792,458 m/s or 299,792,458 km/s.
  • #1
Rabinow23
7
0
Problem Statement: I know that speed of light is 3000km per second
Relevant Equations: Is it true?

Can someone correct me if I 'm wrong,just interested thank-you
 
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  • #2
Can someone correct me if I 'm wrong,just interested thank-you
 
  • #3
Well, it's 299 792 458##\text{ms}^{-1}##, or, equivalently 299 792,458##\text{kms}^{-1}##.
 
  • #4
Rabinow23 said:
Problem Statement: I know that speed of light is 3000km per second
Relevant Equations: Is it true?

Can someone correct me if I 'm wrong,just interested thank-you
You dropped a couple of zeroes. And this is the speed in a vacuum; it is slower in other media.
 
  • #5
You are off by a factor of 100.
It is 299,792 Km/s
 

1. What is the speed of light?

The speed of light is a physical constant that represents the maximum speed at which all matter and information in the universe can travel. It is approximately 299,792,458 meters per second or 186,282 miles per second.

2. How was the speed of light determined?

The speed of light was first determined by Danish astronomer Ole Rømer in the late 17th century. He observed the timing of eclipses of Jupiter's moons and noticed that the time between eclipses varied depending on the distance between Earth and Jupiter. From this, he calculated the speed of light to be about 220,000 kilometers per second.

3. Is the speed of light always constant?

Yes, according to Einstein's theory of special relativity, the speed of light is constant in a vacuum and is the same for all observers regardless of their relative motion. This means that no matter how fast an object is moving, the speed of light will always be the same.

4. Can anything travel faster than the speed of light?

No, according to our current understanding of physics, nothing can travel faster than the speed of light. This is because as an object approaches the speed of light, its mass and energy increase infinitely, making it impossible to reach or exceed the speed of light.

5. How does the speed of light affect our daily lives?

The speed of light plays a crucial role in various technologies that we use every day, such as communication systems, GPS, and medical imaging devices. It also helps us understand the vastness of the universe and how light from distant stars and galaxies reaches us. Additionally, the speed of light has been a fundamental constant in the development of modern physics and our understanding of the natural world.

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