Light Has No Mass… So Why Is Its Speed Limited? | SLEEP SCIENCE STORIES

Transcript

Imagine this. You're holding a flashlight in your hand. You press the button and light shoots out at 299,792,458 m/s. Now, here's the mindbending part that's going to shake everything you thought you knew about reality. Light has absolutely zero mass. Zero. Nothing. It doesn't weigh anything. So, answer me this. If light has no mass, if there's lit... Read More