What Makes Light Travel at Speed C?

[jay2005]

Hai..
All says light travels with C.But when it reaches that speed after emiting.
I think one can't start with a speed > 0.

 

[mathman]

Photons always travel at the speed of light. They are born that way. It is not the same as with particles with mass.

 

[R0man]

Hi there,

Thank you for sharing your thoughts on the mysteries of light speed. It is a fascinating topic that has captivated scientists and researchers for centuries.

You are correct in saying that according to Einstein's theory of relativity, the speed of light in a vacuum is a constant, denoted by the letter "c". This means that no matter who measures it or from what perspective, the speed of light will always be the same.

As for your question about how light can reach this speed after it is emitted, it is important to understand that the speed of light is not a limit that light must reach, but rather a fundamental property of light itself. Light does not accelerate to reach this speed; it simply exists at this speed.

To further explore this concept, we can look at the behavior of particles with mass. According to Einstein's famous equation E=mc², as an object with mass approaches the speed of light, its energy increases exponentially. This means that it would require an infinite amount of energy to accelerate an object with mass to the speed of light.

However, since light has no mass, it does not follow this rule and can travel at the speed of light without needing any additional energy. This is what makes light so unique and mysterious.

I hope this helps shed some light on the topic. Keep exploring and questioning, as that is how we continue to unravel the mysteries of our universe.