Veritasium

Why you can't trust a test that's 99% accurate

1.4M views · 2d ago · 1:30

What does it mean to get a positive result on a medical test? Chances are you might not actually have the disease...

Why do deserts get cold at night?

1.9M views · 7d ago · 1:26

The desert ground is blistering hot in the day but just a few hours after nightfall, it's freezing. Why does this happen?

I finally saw quantum mechanics with my own eyes... (It's spookier than I expected)

18.6M views · 9d ago · 1:05:56

If you backed us on Kickstarter, don’t worry, your game will ship before any pre-orders are fulfilled. If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically

Topics: The "Impossible" Liquid · The Race to Absolute Zero · Why Helium Seemed Impossible to Liquefy · The First Liquid Helium Ever Made · Can you make solid helium? · What is superconductivity?

📖 Mentioned book: Freezing Physics

These ponds help support half the people on Earth

551K views · 11d ago · 1:53

What are these electric blue ponds in the middle of the Utah desert? And why do they keep changing color?

What happens if I lower this weight into the water?

3.4M views · 14d ago · 1:14

Will the weighing scale underneath go up, down or stay the same?

Why doesn't your heart get tired like other muscles do?

1.4M views · 17d ago · 1:13

The secret to why your heart never gets tired...

Relativity is so much weirder than we thought...

8.2M views · 21d ago · 34:28

Can atomic clocks prove Einstein wrong? The biggest protection in the game! Go to and get an exclusive NordVPN deal + 4 extra months. It’s risk free with NordVPN’s 30-day money-back guarantee! If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically

Topics: Does gravity obey the rules of quantum mechanics? · How does an atomic clock work? · Why Optical Atomic Clocks Are So Accurate · Using Lasers To Cool Atoms Down · Driving an atomic clock up a mountain · Linking Atomic Clocks Across 80 Kilometres

Fiber Optics are so much cooler than I thought

16.2M views · 1mo ago · 34:32

If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically Special thanks to the experts and collaborators who made this video possible Dr. Donald Keck Prof. Vincent Chan Sir David Payne Dr.

Topics: What are fiber optics? · Why Copper Phone Lines Had Limited Capacity · Trying To Go From Copper Communication To Glass · Why is glass so ‘lossy’? · Scattering and Absorption · How can you remove impurities in glass?

What is edge dislocation?

4.7M views · 1mo ago · 1:11

We demonstrated a crystal lattice of atoms using bubbles.

How Dangerous Are Non-Stick Pans?

1.7M views · 1mo ago · 1:41

What happens to your body if you eat Teflon from a non-stick pan?

We're trying something new...

1.5M views · 1mo ago · 5:08

Veritasium's mission has always been to get to the truth - to understand how and why things work the way they do. We love the variety of topics we're able to cover - from the real to the abstract - and the heart of that is always hard science.

▶️ Mentioned videos: First video out

What happens to these balloons when you open the valve?

1.7M views · 1mo ago · 1:34

Take a balloon and fill it with lots of air. Take another one and fill it with less air. Now connect the two via a valve. What do you think will happen when you open the valve?

The Insane Real Engineering of the Nazi Enigma Machine

22M views · 1mo ago · 47:42

If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically A huge thanks out to Sir Dermot Turing, Jonah Weinbaum, Andrew Fryer, John Pickles, Peter Hoath, Robert Dowell and all of the experts at Bletchley Park & The National Museum of Computing that helped make this video possible!

Topics: Who invented Enigma? · How did Enigma work? · The Secret Spy Mansion · The First Codebreakers Who Broke Enigma · Trying To Decrypt An Enigma Message · Who was Alan Turing?

▶️ Mentioned videos: Shout out to Jared Owen for letting us use 3D model of the Enigma machine! amazing video

The Scariest Chart In Engineering

1.6M views · 2mo ago · 1:11

Why is the Smith Chart one of the scariest charts in electrical engineering? We printed the largest one in the world to explain how it works and why it's so terrifying (to engineers at least).

The Most Dangerous Escalator In Europe

8.1M views · 2mo ago · 1:17

In 2018 football fans were leaving a stadium in Rome. They boarded an escalator down to the metro. Suddenly the machine sprung a fault. Multiple safety systems were triggered. One after another. And then the final line failed.

A Physics Professor Bet Me $10,000 I'm Wrong...

3.1M views · 2mo ago · 1:31

A UCLA Physics Professor bet me $10,000 that my video ( about going downwind faster than the wind was wrong. Here's how we proved it...

▶️ Mentioned videos: A UCLA Physics Professor bet me 10,000 that video (

It's impossible to choose a number at random

2M views · 2mo ago · 1:41

In math you can't truly pick things at random because formulas always give the same result. So if we can't pick randomly, how do we select anything in math?

We sent a camera to space to film the solar eclipse

2.8M views · 2mo ago · 22:45

If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically If you backed us on Kickstarter, don’t worry, your game will ship before any pre-orders are fulfilled.

Topics: The 2026 Total Solar Eclipse · Why there are more total solar eclipses in the Northern Hemisphere · How we get 5 solar eclipses a year · Why the Sun turns white only during totality · How the eclipse faked an element · The weird shadows during the eclipse

▶️ Mentioned videos: Video on youtube.com

How do submarines know where they are?

2.5M views · 3mo ago · 1:31

How does a submarine find its way 600m deep in the ocean? Surfacing is obviously the easiest way but not when you want to stay hidden. So how do a crew balance concealment and pathfinding?

Is spider web really stronger than steel?

10M views · 3mo ago · 26:58

Last year, we launched the Elements of Truth game on Kickstarter and were thrilled by the response. We’re now in the final stages of production, with Kickstarter rewards shipping soon. Pre-order the retail edition here If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically

Topics: Could Spider Silk Let You Swing Like Spider-Man? · Is Spider Silk Really Stronger Than Steel? · Testing Spider Silk's Tensile Strength · The Strongest Silk on Earth · Spider Silk vs Kevlar vs Steel · The Nanostructure Behind Spider Silk's Strength

Why does every mammal get 1 billion heartbeats in their life?

6.9M views · 3mo ago · 35:32

Last year, we launched the Elements of Truth game on Kickstarter and were thrilled by the response. We’re now in the final stages of production, with Kickstarter rewards shipping soon. Pre-order the retail edition here If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically

Topics: How much LSD should you give an elephant? · Metabolic Rate In Animals · The Surface Law · What is Kleiber’s Law? · Why is 1⁄4 everywhere in biology? · WBE Theory

The Most Controversial Thought Experiment In Physics

1.9M views · 3mo ago · 1:43

Put a cat in a box with a radioactive atom. Add a radiation detector that triggers the release of poisonous cyanide gas. Schrödinger's thought experiment was supposed to be a criticism of quantum mechanics and is now one of it's best explainers.

Why Waves Travel Faster At The Top

6.2M views · 3mo ago · 1:58

Why do objects travel with waves? We're taught waves only transfer energy, not material, but objects wash ashore all the time. How does this work?

The Scariest Chart in Electrical Engineering

6.9M views · 4mo ago · 39:44

Last year, we launched the Elements of Truth game on Kickstarter and were thrilled by the response. We’re now in the final stages of production, with Kickstarter rewards shipping soon. Pre-order the retail edition here If you’re looking for a molecular modelling kit, try Snatoms, a kit I invented where the atoms snap together magnetically

Topics: The Scariest Chart In Engineering · Standing Waves And Reflections · Why does a wave bounce back? · How to stop a wave from bouncing back · The Smith Chart · How To Read The Smith Chart

▶️ Mentioned videos: zachstar 's video on the Smith Chart · 3blue1brown 's video to learn more about transformations and conformal maps