What If Light Slowed Down? (3D Animation)

Your reflection is two seconds behind you. Then the sunset, the signals around you, and eventually the street itself begin to show you the past. Follow one continuous journey as light slows from 299,792 km/s to less than a millimetre per second. The Trace explores what happens to your world when one law of physics changes. This is a thought experiment that isolates the visible effects of slowing light; a fully consistent change to the laws of physics would affect much more. Next: What If Earth’s Spin Slowed Down?