The Technology that Made the Internet Possible

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). Manuel (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. Bay Area Glass Institute for hosting our team. 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 explanation is simplified. The full analysis involves the eddy currents' own magnetic fields, which induce further currents, and so on. Here’s an article on the same: https://ve42.co/SkinEffectDerivation ▀▀▀ Special thanks to our Patreon supporters: Adam Foreman, Albert Wenger, Alex Porter, Alexander Tamas, André Powell, Anton Ragin, Balkrishna Heroor, Bertrand Serlet, Blake Byers, Bruce, Bryan Ackermann, Chris Brewer, Data Don, Dave Kircher, David Johnston, David Tseng, EJ Alexandra, Evgeny Skvortsov, Garrett Mueller, Gnare, gpoly, Hayden Christensen, Hong Thai Le, Ibby Hadeed, Jeromy Johnson, Juan Benet, Kelcey Steele, Kyi, Lee Redden, Marinus Kuivenhoven, Mark Heising, Meekay, meg noah, Michael Krugman, Orlando Bassotto, Parsee Health, Patreon mp22, Paul Peijzel, Robson, Sam Lutfi, Shalva Bukia, Sinan Taifour, Steven, Sweet_Nemo, Tair Aurmont, Tj Steyn, Ubiquity Ventures, Vahe Andonians, wolfee ▀▀▀ Credits Writers: Sulli Yost, Henry van Dyck Producer and Director: Sulli Yost Presenter: Henry van Dyck Editors: George Reynolds, Trenton Oliver and Axel Oliver Assistant Editor: James Stuart Illustrators: Jakub Misiek, Raphael Aubry, Thomas Brizard and Emma Wright Animators: Aleksandrs Loginovs, Alex Drakoulis, Andrew Neet, Andrew Wernette, Domonkos Józsa, Emma Wright, Fabio Albertelli, Rokas Viksraitis and Sulli Yost Researchers: Aakash Singh Bagga, Sophia Rose, Callum Cuttle and Gabe Strong Camera Operators: Sulli Yost, Aaron Zhizhin, Emilia Gyles and Jesse Chandler Thumbnail Designers: Abdallah Rabah, Daniel Ellacott Production Team: Anna Milkovic, Glen Griffiths, Jess Bishop-Laggett, Matthew Cavanagh Executive Producers: Derek Muller, Emilia Gyles and Henry van Dyck


View on YouTube.

For Sharpshooters, Their Vibrations Are Key to Finding a Mate | #DeepLook #Shorts

Sharpshooter insects make a living hopping around plants like grapevines and feeding on their sap. When it's time to mate, they shake their abdomens to make strange calls that – when amplified in a lab – sound like a clucking chicken, a howling monkey or a motorcycle revving up. Learn more in our episode "Sharpshooter Insects’ Sexy Vibrations Spell Trouble in the Vineyard" 👉 https://youtu.be/uFA614SEDMQ #youtubeshorts #sharpshooter #deeplook


View on YouTube.

Why a Satellite Dish Can Stay Pointed at One Spot

A geostationary satellite matches Earth’s rotation in a circular equatorial orbit. Bob explains why a fixed dish can keep pointing toward it. Want to learn more? Watch this related public BtSG video: Why Your Internet and GPS Use Different Satellites https://www.youtube.com/watch?v=lSNJQ46B1g0 Bob the Science Guy — Science You Can Test. Follow for more science you can test! #Science #BobTheScienceGuy #Shorts


View on YouTube.

Marine Biologist AMA: KPassionate Livestream

Produced by KPassionate
This episode features: Marine Biologist AMA: KPassionate Livestream

Additional Information:
► Website: https://kpassionate.com
► Patreon: https://patreon.com/kpassionate
► Merch: https://kpassionate-shop.fourthwall.com
► Instagram: https://instagram.com/kp.assionate
► Twitch: https://twitch.tv/kpassionate
► TikTok: https://tiktok.com/@k_passionate?lang=en

For more information or to watch the video on YouTube, click here!

Marine Biologist AMA: KPassionate Livestream

Produced by KPassionate
This episode features: Marine Biologist AMA: KPassionate Livestream

Additional Information:
► Website: https://kpassionate.com
► Patreon: https://patreon.com/kpassionate
► Merch: https://kpassionate-shop.fourthwall.com
► Instagram: https://instagram.com/kp.assionate
► Twitch: https://twitch.tv/kpassionate
► TikTok: https://tiktok.com/@k_passionate?lang=en

For more information or to watch the video on YouTube, click here!

Skeptics Guide #1109

The Skeptic’s Guide to the Universe Skepticast #1109 October 8th 2026 Segment #1. Special Segment AI Follow Up. Segment #2. News Items 2026 Nobel Prizes News Item #1 – Physiology or Medicine https://www.nobelprize.org/uploads/2026/10/popular-medicineprize2026.pdf News Item #2 – Physics https://www.nobelprize.org/prizes/physics/2026/press-release/ News Item #3 – Chemistry https://www.nobelprize.org/prizes/chemistry/ News Item #4 – Reading Fiction https://phys.org/news/2026-09-nightstand-empathy-cognitive-health.html Segment 3. Who’s That Noisy Segment #4. Your Questions and E-mails Question #1: Sleep and Consciousness I lay here at 3 am having just experienced something odd that perhaps has an explanation in the neurology of sleep and consciousness. I was asleep, I think dreaming, and I thought I had a good idea for work. And a part of my mind was saying don't wake me up for this, it's going to be a stupid idea. I looked at the clock, I could tell the time, but I still couldn't really understand the idea. Ultimately, I woke up completely, and yes the idea was stupid. So the question that my fully awake mind has is; was this a moment of partial consciousness and does sleep science explain why I couldn't understand this idea until I was fully awake? And was it really two parts of my brain separately thinking? Paul Mississauga Canada Segment #5. Science or Fiction Each week our host will come up with three science news items or facts, two genuine, one fictitious. He will challenge our panel of skeptics to sniff out the fake – and you can play along. Theme: Whales Item 1: Killer whales, or orcas, are actually dolphins, which are, in fact, whales. Item 2: Whales belong to the taxonomic group, Artiodactyla, the even-toed ungulates, with their hooved limbs evolving into flippers. Item 3: It is estimated that humpback whale populations worldwide were about 150,000 individuals prior to hunting, and now their total population is estimated at about 5,000. Segment #6. Skeptical Quote of the Week "When kids look up to great scientists the way they do musicians, actors [and sports figures], civilization will jump to the next level." - Brian Greene


View on YouTube.

ROADSIDE LAWYER Karen Thinks She Knows The Law, Fights The Police and GETS ARRESTED!!!

Hey guys, and welcome to today's video! Today we have 2 bodycam videos to react to! The first is an idiot who thinks he knows the law, but actually doesn't. Then we have a Karen who refuses to sign a ticket, gets into a fight with the officer and gets arrested in front of her kid! SOURCES : First Video - https://www.youtube.com/watch?v=aG_czQeWLpU Second Video - https://www.youtube.com/watch?v=v6R4mUeIbFo My livestream talking about the PPO - www.youtube.com/watch?v=gmZGR-otoJg Lindsey Duneske Playlist - https://youtube.com/playlist?list=PLbne4o_I5IZ0sf-wa_WsX5Gu9sgm8SHbz&si=rg2Ab84SSI7uoGz0 To Support The Channel : Team Skeptic Fund : https://paypal.me/TeamSkepticYT Become A Channel Member : https://www.youtube.com/channel/UCawl3BI9azbMB5DQqJNpRrg/join Join Our Patreon : https://www.patreon.com/TeamSkeptic #Court #CourtCam #TeamSkeptic


View on YouTube.