Saturday, October 14, 2023

Is time travel possible?

What does physics say about time travel? Surprisingly enough it doesn't just say it's impossible, it's more complicated that that. In this video I'll sort out what Einstein's general relativity and quantum mechanics tell us about time travel. And is MIT really building a time machine to find dark matter? We'll get to that.

NEW: This video comes with a quiz on QuizWithIt.

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