Eli5: Why does light travel so fast?
In: 130
You can flip this question on its head. Why doesn’t everything travel at the same speed as light?
Photons aren’t the only particles that travel at the speed of light. It turns out that all particles travel at the same speed except for particles that interact with the Higgs field.
The answer is that everything does travel at the same speed unless it’s prevented from doing so. Instead of solid stuff, mass can be thought of as something that takes energy to move.
Latest Answers