Eli5: How does Light Travel if it Experiences no Time?

517 viewsOtherPhysics

Einstein’s Theory of Relativity states that light (as it is travelling obviously at the speed of light) is so fast that it experiences no (zero) time. Obviously light does move a distance, as thats how we see things as the light bounces off of objects into our eyes, but surely with the equation ‘distance = speed\*time’ and time being zero it implies light doesn’t travel any distance?

In: Physics

6 Answers

Anonymous 0 Comments

> Einstein’s Theory of Relativity states that light (as it is travelling obviously at the speed of light) is so fast that it experiences no (zero) time.

Einstein’s Theory of Relativity actually states that as velocity approaches c, time tends to zero, but that anything traveling *at* c doesn’t have a valid rest frame that can be described within the context of relativity.

This tends to get glossed over in pop sci descriptions but is an important distinction.

You are viewing 1 out of 6 answers, click here to view all answers.