Write a short note on the speed of light
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Light traveling through a vacuum moves at exactly 299,792,458 meters (983,571,056 feet) per second. That's about 186,282 miles per second — a universal constant known in equations and in shorthand as "c," or the speed of light. ... That means the speed of light functions as a speed limit on the whole universe.18-Aug-2021
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- The universal physical constant c, or the speed of light in vacuum, is fundamental in many fields of physics.
- Its precise number is 299792458 meters per second (about 300000 kilometers per second, or 186000 miles per second).
- It's precise because a meter is defined as the length of light's passage in vacuum during a time span of 1299792458 seconds, as agreed upon by international agreement.
- c is the highest limit for the speed at which ordinary matter, energy, or any signal conveying information may move across space, according to special relativity.
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