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

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/... Rohin's zero-g video is here:    • Doing Real Science (and Breakdancing)...   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 🤓 Check out our new quiz app ➜ http://quizwithit.com/ 💌 Support us on Donatebox ➜ https://donorbox.org/swtg 📝 Transcripts and written news on Substack ➜ https://sciencewtg.substack.com/ 👉 Transcript with links to references on Patreon ➜   / sabine   📩 Free weekly science newsletter ➜ https://sabinehossenfelder.com/newsle... 👂 Audio only podcast ➜ https://open.spotify.com/show/0MkNfXl... 🔗 Join this channel to get access to perks ➜    / @sabinehossenfelder   🖼️ On instagram ➜   / sciencewtg   #science #physics