Andrew Pontzen and Tom Whyntie: The fundamentals of space-time: Part 2

Light always travels at a speed of 299,792,458 meters per second. But if you're in motion too, you're going to perceive it as traveling even faster -- which isn't possible! In this second installment of a three-part series on space-time, CERN scientists Andrew Pontzen and Tom Whyntie use a space-time diagram to analyze the sometimes confounding motion of light. [Directed by Giant Animation, narrated by Andrew Pontzen and Tom Whyntie].

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