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.
See on ed.ted.com