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Currently Playing: What is Spacetime, Exactly?

Spacetime is the idea that the universe is 4-dimensional, but what exactly is a dimension? Let's get figure it out by making a better spacetime diagram. Watch this video ad-free on Nebula: https://nebula.tv/videos/scienceasylum-what-is-spacetime-exactly NEW CHANNEL: https://www.youtube.com/@EquilibriumFX Nick Lucid - Host, Writer, Editor, Animator Em Lucid - Producer ________________________________ VIDEO ANNOTATIONS/CARDS What Everyone Gets Wrong About E=mc²: https://youtu.be/HK6IIZ9jqfo Gregor Mendel Biography: https://youtu.be/JkPpArU5RPQ ________________________________ SUPPORT THE SCIENCE ASYLUM Patreon: https://www.patreon.com/ScienceAsylum YouTube Membership: https://www.youtube.com/channel/UCXgNowiGxwwnLeQ7DXTwXPg/join Sign-Up for Nebula: https://go.nebula.tv/scienceasylum Advanced Theoretical Physics (Paperback): https://www.lulu.com/shop/nick-lucid/advanced-theoretical-physics-a-historical-perspective/paperback/product-24250687.html Advanced Theoretical Physics (eBook): https://gumroad.com/l/ubSc Merchandise: https://www.scienceasylum.com ________________________________ HUGE THANK YOU TO THESE SUPPORTERS Asylum Counselors: Joe K. Kim Asylum Orderlies: Chloë Joan López, Dhruv Singhal, James Smith, Joel Wolhendler, Medec Hurtz, Peter Engrav Einsteinium Crazies: A.C. S., Benjamin Sharef, Dan Sullivan, Eoin O'Sullivan, Jonathan Lima, Joseph Salomone, Kevin Flanagan, Matias Cveczilberg, William Hutchison Plutonium Crazies: Al Davis, Compuart, Ellis Hall, Kevin MacLean, Rick Myers Platinum Crazies: Christopher Bennett, Clayton Bruckert, David Johnston, Ishay Oz, Jonathan Reel, Li-Ce Hu, Marino Hernandez, Mr. Orn Jonasar, Ulrich ________________________________ SOURCES Minkowski Papers: "The Fundamental Equations for Electromagnetic Processes in Moving Bodies" (English) https://en.wikisource.org/wiki/Translation:The_Fundamental_Equations_for_Electromagnetic_Processes_in_Moving_Bodies (German) https://de.wikisource.org/wiki/Die_Grundgleichungen_f%C3%BCr_die_elektromagnetischen_Vorg%C3%A4nge_in_bewegten_K%C3%B6rpern "Space and Time" (English) https://en.wikisource.org/wiki/Space_and_Time_(Prasad) (German) https://de.wikisource.org/wiki/Raum_und_Zeit_(Minkowski) "The Relativity Principle" (German PAYWALLED) https://onlinelibrary.wiley.com/doi/10.1002/andp.19153521505 ________________________________ LINKS TO COMMENTS https://www.youtube.com/watch?v=JkPpArU5RPQ&lc=UgxM9E8SWlexbfmsTNZ4AaABAg https://www.youtube.com/watch?v=JkPpArU5RPQ&lc=Ugy4miD0k1b-D2-_aQZ4AaABAg https://www.youtube.com/watch?v=JkPpArU5RPQ&lc=Ugz7UO1QH2M4M4iV-wl4AaABAg ________________________________ IMAGE/VIDEO CREDITS Portraits: https://commons.wikimedia.org/wiki/File:Einstein_patentoffice_full.jpg https://commons.wikimedia.org/wiki/File:Hermann_Minkowski_Portrait.jpg ________________________________ TIME CODES 00:00 Intro 00:22 Modern Relativity 01:15 What is a Dimension? 02:18 Drawing 4 Dimensions 03:10 Spacetime Diagram 04:01 Minkowski vs Einstein 04:31 Spacetime Events 05:56 Cause and Effect (Causality) 07:01 Closing Thoughts 07:47 Featured Comments