Light Speed (Noun)
Meaning
The speed at which light travels in a vacuum; the constancy and universality of the speed of light is recognized by defining it to be exactly 299,792,458 meters per second.
Classification
Nouns denoting time and temporal relations.
Examples
- The theory of special relativity relies heavily on the concept of light speed as a fundamental constant of the universe.
- In a vacuum, light speed is approximately 299,792,458 meters per second, a value that has been precisely measured and confirmed.
- According to Einstein's theory of relativity, nothing with mass can reach or exceed light speed, making it the universal speed limit.
- The speed of light in a vacuum is always constant, regardless of the motion of the observer or the source of light, and is referred to as light speed.
- The speed of light in various mediums, such as water or air, is always less than light speed in a vacuum due to the interactions with particles in those mediums.