There Is Something Faster Than Light

How an argument between Einstein and Bohr changed quantum mechanics forever. Sponsored by NordVPN - 🌏 Get exclusive NordVPN deal here: https://NordVPN.com/veritasium It’s risk free with Nord’s 30 day money-back guarantee!✌ In 2025, we launched the Elements of Truth game on Kickstarter and were thrilled by the response. We’re now in the final stages of production, with Kickstarter rewards shipping soon. If you missed the campaign, you can now pre-order the retail edition through our new website here -https://ve42.co/BellsDesc If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically - https://ve42.co/SnatomsV Sign up for the Veritasium newsletter for weekly science updates - https://ve42.co/Newsletter ▀▀▀ Thank you to Dr Adam Becker for his help with this video - check out his book here https://ve42.co/WhatReal And special thanks to Thierry Avignon, Benjamin Vest, and Lionel Jacubowiez of the Institut d'Optique Graduate School - Laboratoire d'Enseignement Expérimental (LEnsE) Correction: 30:53 Electrons and Positrons not Protons ▀▀▀ 0:00 The Speed of Gravity 3:07 Spooky Action at a Distance 5:21 The Copenhagen Interpretation 9:12 The EPR Paradox and Hidden Variables 17:25 Einstein vs Bohr 20:51 John Bell and Entanglement 22:14 Bell’s Theorem 29:30 The Bell Inequality Test 33:41 The Most Misunderstood Experiment in Physics 35:06 The Locality Problem 40:37 The Many-Worlds Interpretation ▀▀▀ References: Adam Becker (2018). What is Real?. Basic Civitas Books - ve42.co/WhatReal Einstein-Podolsky-Rosen paradox via Wikipedia - ve42.co/EPRWiki Einstein, A. et al. (1935). Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?. American Physical Society (APS) - ve42.co/EPR Solvay Conference via Wikipedia - ve42.co/SolvayConf Owen Willans Richardson Photo Galley via nobelprize.org - ve42.co/SolvayPhoto Bohr-Einstein debates via Wikipedia - ve42.co/BohrEinDeb Bacciagalup