How Thermite turned the clickety-clack of railroads into seamless, silent tracks. Get an exclusive 15% discount on Saily data plans! Use code veritasium at checkout. Download Saily app or go to https://saily.com/veritasium
A massive thank you to everyone at Goldschmidt for making this possible. With special thanks to Dr. Axel Hoeschen, Christof Gassmann and Claudia Koch.
If you want to learn all the details about why we don’t need expansion joints anymore, check out Grady’s excellent video here: • Why Railroads Don’t Need Expansion Jo…
If you’re looking for a molecular modeling kit, try Snatoms, a kit I invented where the atoms snap together magnetically. https://snatoms.com/
▀▀▀
00:00 The problem with continuous welded rail
03:33 How to weld two rails together
10:16 Why is rapidly cooled steel brittle?
11:40 Thermite reaction and a see-through mold
16:30 Clean up
19:11 Metallurgy
22:15 How strong is the weld?
24:26 Why don’t the rails buckle?
▀▀▀
References:
Practical Engineering. Why Railroads Don’t Need Expansion Joints • Why Railroads Don’t Need Expansion Jo…
Stress–strain curve In Wikipedia – https://ve42.co/stressstrain
The Efficient Engineer. Understanding Metals via Youtube • Understanding Metals
moodlemech. Properties and Grain Structure via Youtube – • Properties and Grain Structure
Images & Video:
bhadeshi123. Martensitic transformation via Youtube • Martensitic transformation
Stratford Works In Wikipedia – https://ve42.co/stratford
Electric Tram 1881 In Wikipedia – https://ve42.co/tram
Water Quenched Steel In Wikipedia – https://ve42.co/quench
Synagoge 1922 In Wikipedia – https://ve42.co/synagoge
[…]
Japan’s Fireworks Town is Katakai, Niigata Prefecture, and they host an annual festival dedicated to launching them high into the sky over scenic rice paddies. How big are they? The bigger, the better!
That’s the spirit!
Meet the YONSHAKUDAMA
Japan’s biggest fireworks shell weighs about 420kg (925 pounds)
It was created by Masanori Honda in 1986. The world had never seen anything like this!
It was the largest ever artillery firework shell in 2014 when it entered the Guinness Book of World Records. Since then, more ridiculous sizes have been launched but it all started with Honda-san. He’s been launching up the insane 420 kg (925 lb) “Yonshakudama” Firework Artillery Shell for decades.
The Katakai Matsuri is held annually on September 9th and 10th for over 400 years. […]
With the just announced breakthrough of NNC2215, we just entered the dawn Medicine 4.0. Use code 50DRBENMILES to get 50% OFF plus free shipping on your first Factor box at https://bit.ly/3OqNXuh!
Relevant Nature papers here:
Original breakthrough (pay-walled): https://www.nature.com/articles/nchem…
Recent breakthrough: https://www.nature.com/articles/s4158…
Lab scientist looking to launch a business? https://www.spin-up.science/ventures
Want to upgrade your commercial skills? https://www.spin-up.science/academy
Raising investment? (UK currently, Q2 UK, EU, US): https://www.empiricalventures.vc/
#breakthrough #medicine #science
[…]
December 31, 2024
Animation
Craft
Film
Kate Mothes
Rockets soar and sparks fly in Andrea Love’s stop-motion animated tribute to a favorite New Year’s Eve tradition.
Rockets soar and sparks fly in Andrea Love’s animated tribute to a favorite New Year’s Eve tradition. In case you can’t make it to a live event this year, sit back and celebrate the launch into 2025 with the artist’s mesmerizing pyrotechnic show.
Love (previously) is known for her tender stop-motion portrayals of daily routines in her Cooking with Wool series, along with myriad felted scenarios for clients like Loewe, Michael’s, Hermès, and Netflix. Learn more about her work on her website, and explore all of her videos on YouTube.
Source: Ring in the New Year with Andrea Love’s Stop-Motion Felted Wool Pyrotechnics
Moon dressed as Saturn.
— Moon lover (@moon1over.bsky.social) 2024-12-31T03:23:00.917Z
