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Gravity is not a force. But what does that mean?

Sabine Hossenfelder 1,056,633 lượt xem 1 year ago
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Check out my quantum mechanics course on Brilliant! First 200 to use our link https://brilliant.org/sabine will get 20% off the annual premium subscription.

Just exactly what does it mean that gravity is not a force? In this video I will revisit the question and explain why you are currently accelerating upwards, and how Einstein's equivalence principle works.

The quiz for this video is here: https://quizwithit.com/start_thequiz/1702972458163x675901602454850000

Rohin's zero-g video is here: https://www.youtube.com/watch?v=RyrTHlOdjDA

00:00 Intro
00:42 Acceleration is absolute
02:17 How gravity works in general relativity
04:21 Einstein's Equivalence principle
11:39 From Einstein back to Newton
13:48 Learn Science with Brilliant

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