Question

What is the speed of light in a vacuum?

Answer 1

1. The speed of light in a vacuum is $3\times {10}^8\raisebox{1ex}{$m$}\!\left/ \!\raisebox{-1ex}{$s$}\right.$
2. The speed of light in a vacuum is $186,282milespersecond$.
3. The first person to discover the speed of light was the ancient Greek philosopher Aristotle.