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Name: ztlifb
Status: N/a
Age: N/A
Location: N/A
Country: N/A
Date: Around 1993

What keeps light from going any faster?

Well, as best as I can explain it, the speed of light is a fundamental physical limitation, which no particle can exceed. It is kind of built into the structure of space and time in our universe. Any particle with no mass, by the way, will always move at the speed of light, so it is not just light that does it. Actually, in physical materials, light actually moves a little slower than the "speed of light". This is measured by the index of refraction of the material, and the reason is because light interacts with the electrons and other charged particles in the materials, which has the overall effect of slowing it down (as well as reflecting, and sometimes absorbing, the light).

Arthur Smith

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