Calculate the Speed of Light in Vacuum

What is the speed of light in a vacuum?

a. 299,792,458 m/s

b. 300,000,000 m/s

c. 299,792,000 m/s

Answer

The speed of light in a vacuum is 299,792,458 m/s.

The speed of light in a vacuum is constant and it is approximately 299,792,458 meters per second (m/s). This speed is the fastest known to mankind and plays a crucial role in various fields, including physics, astronomy, and even in everyday technologies like fiber optics.

The value of the speed of light in a vacuum was first measured by Ole Rømer in the 17th century and further refined over the years. It is a fundamental constant in physics and is denoted by the symbol 'c'.

Knowing the speed of light in a vacuum is crucial for understanding many phenomena in the universe, such as the behavior of light in different mediums and the concept of relativity proposed by Albert Einstein. It serves as a cornerstone for our understanding of the nature of light and the universe.