From Sabine Hossenfelder.

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I’ve spent too much time thinking about how portals could work in the real world and, yes, I guess that is somewhat weird, but well. From energy conservation to momentum conservation to moving portals, I have it all sorted out for you. And the cake is not a lie.

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00:00 Intro
01:14 Portals and Wormholes
02:05 Energy Conservation
04:47 A Detour to Dark Matter and Back
07:42 Momentum Conservation
10:27 Moving Portals
12:21 Portals Aren’t Flat
13:45 More Problems
14:20 Cake
14:27 Learn Science With Brilliant

#physics #portals