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Let's talk about one of the most mysterious numbers in all of modern physics: the number 1/137, known as the fine structure constant, the Sommerfeld constant, or simply the alpha constant, which has been giving physicists headaches for almost 100 years! P.S. There is an error at 14:20: π is, of course, l/d, not d/l. Subscribe to my Telegram channel: https://t.me/physiovisio Support the project via Boosty: https://boosty.to/physiovisio Patreon: / yuritkachev DonationAlerts: https://www.donationalerts.com/r/phys... Videos mentioned in the material: What is spin? • What is spin and why is it so important ... About the charge radius of the proton: • The mystery of the proton radius: what is it ... The Planck system of units: • What are Planck units and what is ... About fundamental interactions: • Fundamental interactions: the four ...