Special relativity is known to make mind-blowing predictions, perhaps most notably the Twin Paradox, in which two individuals claim that the other person’s clock is doing something funny. There have been many explanations, including two videos, one here on the Fermilab channel and one by fellow YouTuber Sabine Hossenfelder. These two videos seem to contradict each other, but they really don’t. In this video, Fermilab’s Dr. Don Lincoln explains how the two videos can be reconciled.

Sabine’s video
   • Special Relativity: This Is Why You M...  

Don’s first twin paradox video (with math)
   • Twin paradox: the real explanation  

Don’s second twin paradox video (without math)
   • Twin paradox: the real explanation (n...  

Fermilab physics 101:
https://www.fnal.gov/pub/science/part...

Fermilab home page:
https://fnal.gov