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Physicist explains four dimensions of spacetime | Janna Levin and Lex Fridman

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Lex Fridman Podcast full episode: Thank you for listening ❤ Check out our sponsors: https://lexfridman.com/sponsors/cv8812-sb See below for guest bio, links, and to give feedback, submit questions, contact Lex, etc.

GUEST BIO: Janna Levin is a theoretical physicist and cosmologist specializing in black holes, cosmology of extra dimensions, topology of the universe, and gravitational waves.

CONTACT LEX: Feedback - give feedback to Lex: https://lexfridman.com/survey AMA - submit questions, videos or call-in: https://lexfridman.com/ama Hiring - join our team: https://lexfridman.com/hiring Other - other ways to get in touch: https://lexfridman.com/contact

EPISODE LINKS: Janna's X: https://x.com/JannaLevin Janna's Website: https://jannalevin.com Janna's Instagram: https://instagram.com/jannalevin Janna's Substack: https://substack.com/@jannalevin Black Hole Survival Guide (book): https://amzn.to/3YkJzT5 Black Hole Blues (book): https://amzn.to/42Nw7IE How the Universe Got Its Spots (book): https://amzn.to/4m5De8k A Madman Dreams of Turing Machines (book): https://amzn.to/3GGakvd

SPONSORS: To support this podcast, check out our sponsors & get discounts: Brain.fm: Music for focus. Go to https://lexfridman.com/s/brainfm-cv8812-sb BetterHelp: Online therapy and counseling. Go to https://lexfridman.com/s/betterhelp-cv8812-sb NetSuite: Business management software. Go to https://lexfridman.com/s/netsuite-cv8812-sb Shopify: Sell stuff online. Go to https://lexfridman.com/s/shopify-cv8812-sb AG1: All-in-one daily nutrition drink. Go to https://lexfridman.com/s/ag1-cv8812-sb

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