More
This week on the channel +25M views this week

Glass carries the internet in Veritasium's engineering deep dive

Henry van Dyck presents the fiber-optics story, with pioneer Donald Keck and a visit to a fiber manufacturing plant.

No. 7 on the Science chart

Why this story? The channel's weekly summary: what went up this week, what is drawing views now, and where the channel stands among similar channels.

The Insane Engineering of Fiber OpticsThe Insane Engineering of Fiber Optics

What would viewers like Veritasium to explain next? Under "The Absurd Engineering Behind the Internet," a particularly popular answer is already waiting: submarine cables and the amplifiers that keep signals traveling beneath the sea.

There is plenty above water first. Presented by Henry van Dyck and directed by Sulli Yost, the week's most watched new upload traces the move from capacity-limited copper lines to glass fibers. Its chapters turn an apparently simple idea, sending information with light, into a succession of stubborn problems: scattering, absorption, impurities and, finally, manufacturing glass pure enough for the job. Donald Keck, a pioneer of low-loss optical fiber, is among the experts featured, alongside a tour of Prysmian's fiber plant.

The film has reached about 5.5 million views. Viewers are connecting its long engineering effort with the everyday impatience of waiting for a page to load; others recall Veritasium's blue LED documentary, another story about making a seemingly impractical technology work.

The other new upload, "What is edge dislocation?", uses bubbles to demonstrate an atomic crystal lattice. That gives the two-upload week a pleasing change of scale: the infrastructure carrying our messages, and the tiny structural details inside materials.

Across the channel, daily viewing is substantially above its usual pace, and subscribers grew over the week. Vsauce and Cleo Abram also had substantial weekly viewing among the nearby science channels, while SmarterEveryDay had a quieter stretch.

The internet film is Veritasium's most active upload right now, but the Enigma documentary has not gone dormant. Its exploration of cipher machinery, early codebreakers and Bletchley Park is approaching 20 million views and remains the channel's next strongest daily draw.

Published on Trari

Where next?

What viewers say

  • I would love to see a video about submarine cables and fiber amplifiers!!!! thx
  • It's funny how we get frustrated when our internet takes a few seconds to load, without realizing that behind that connection are scientists who spent years solving a problem many believed was impossible.
    @FER2000-z3vSee it on YouTube
  • It's crazy how it went from a theoretical/unsolvable problem, to a materials/plausible one, and finally into "just" a manufacturing/practical problem, from no one being interested to everyone racing to get there.
2 more comments
  • 32:49 Ofcourse we want a video on the amplifiers. Who wouldn't want more of veritasium?
    @user.accountSee it on YouTube
  • Your whole documentary on who created the blue LED, how the blue LED was created, and why it was impossible to create is something that fascinates me the most. After watching that video, I thought that nothing is impossible. It just needs effort, determination, and pure love and passion for discovery, and it finally happens before our eyes.
    @Dont_Search_Nuriyah_KhanSee it on YouTube

Public comments from the video's page on YouTube

Or follow us on Telegram

The videos drawing views on Veritasium right now

The facts
Channel
Veritasium
Subscribers
21,400,000 ▲ 100,000 this week
Channel views, last 7 days
24,612,166
Videos published this week
2
Video published
October 12, 2026
Video views so far
5,489,826
Views on its first day
3,052,945

The numbers

Here is how Veritasium's uploads and audience moved over the week.

views gained this week: this channel and similar channels
Veritasium
24,612,166
Vsauce
23,119,091
Cleo Abram
22,380,206
ElectroBOOM
7,905,430
NileRed
6,930,389
AsapSCIENCE
2,629,569
subscribers
21,400,000
▲ 100,000 in the last 7 days
total views
4,665,647,593
views per day
5,937,008
typical day: 3,738,099
first-day views of each video posted this week
subscribers: this channel and similar channels
Vsauce
25,300,000
Veritasium
21,400,000
SmarterEveryDay
11,900,000
NileRed
11,000,000
AsapSCIENCE
10,800,000
ElectroBOOM
8,890,000
Cleo Abram
8,870,000
As of October 15, 2026 · Data source: Trari Social News, Trari Traffic Trends and Ranking Platform, Google YouTube
Subscriber, view, like and comment counts are YouTube's. Rates, usual days, rankings, comparisons and categories are Trari's own calculations.
Developed with YouTube

💡 Test your knowledge

Which material carries light in the fiber-optics story explored here?