Science & Space
Science and spaceflight, from rocket launches and planetary exploration to astronomy, physics and discoveries that change our understanding of the world.
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The Clearest Material Ever Made
Why making glass fibers to send signals was almost impossible. Sponsored by Saily - 🌎 Get an exclusive 15% discount on Saily data plans! Download Saily app go to https://saily.com/veritasium Use code veritasium at checkout ⛵ 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 For the latest science news, and for an exclusive bonus Q&A with Sulli, the director of this video, sign up to the Veritasium newsletter - https://ve42.co/VeMail_FO For early access to work in progress videos join our patreon https://ve42.co/VePatreon ▀▀▀ 0:00 What are fiber optics? 2:02 Why Copper Phone Lines Had Limited Capacity 5:13 Trying To Go From Copper Communication To Glass 8:15 Why is glass so ‘lossy’? 11:29 Scattering and Absorption 16:00 How can you remove impurities in glass? 19:00 How They Make Fiber Optic Glass 26:47 The Technology that Made the Internet Possible ▀▀▀ Special thanks to the experts and collaborators who made this video possible: Dr. Donald Keck Prof. Vincent Chan Sir David Payne Dr. Nikola Alic Jim Hayes Jeff Hecht, whose book City of Light: The Story of Fiber Optics was an invaluable resource for this video (explore his work at https://www.jeffhecht.com). Diffraction Limited, who made the fiber kits we used and some additional simulations that were critical to our understanding (https://www.youtube.com/@DiffractionLimited) Trulala CANDY Chef (https://www.youtube.com/@TrulalaCANDYChef) Additional thanks to: ROSENDAHL NEXTROM for providing animations and fiber manufacturing 3D assets: (https://rosendahlnextrom.com/fiber/) Bay Area Glass Institute for hosting our team. (https://bagi.org/) Prysmian for giving us a guided tour of their fiber manufacturing plant, and our two on screen experts: Sujeet Rao, Operational Excellence Fiber Director and Jon Fitz, Technical Sales Support Sr. Manager. ▀▀▀ References: https://ve42.co/FiberRefs Note: The skin effect explana
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