This Particle Breaks Time Symmetry

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Increasing entropy is NOT the only process that's asymmetric in time.
This video was co-written by Daniel Whiteson and Jorge Cham

Special thanks to Patreon supporters:
Tony Fadell, Donal Botkin, Michael Krugman, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen, Joshua Abenir

Original paper on parity violation by the weak force by Lee and Yang:

More on B-meson oscillations and time reversal violation:

Physics consultant: Prof. Stephen Bartlett

Studio filming by Raquel Nuno

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The guy rocking up to the nobel prize ceremony after violating CPT symmetry:
Announcer: Congratulations. You've destroyed half of physics. Here's your prize.

tomow

"she and a team of low temperature scientists" is that a nerdy way to call them cool?

aawagga

Salute to those people who don't understand a single thing here but still come back for every veritasium video

PhysicsHonors

I think Nolan liked this video so much, he made a movie about it.

CharlesGouin

- Honey, are you ready for a vacation?
-Sorry, dear, I have some fundamental physics principles to topple!

xqogltp

"The parity's over, guys."
That nerdy dad joke made me laugh way harder than it should have.

dunnr

Imagine two people playing chess and the one observer who is observing that doesn't knows the rules of chess before hand
As the game proceeds the observer keeps learning and
Now when he sees a pawn walking single step straight way he writes down that pawn walks forward and now when pawn goes diagonaly to attack some other opponent piece.
The observer is in surprise thinking that it broke the laws of chess
Same applies here
Nature is chess player and scientists are observer in this never ending chess game
Always discovering new moves
- Feynman

nitinchaudhary

Mentions Inception in video.

Three years later: TENET

jsward

Low temperature scientists? Those guys sound pretty cool.

whiz

I love how, after getting a bit started on subnuclear physics with my first nuclear and subnuclear physics course, i can now see this and not only properly understand what he's talking about but also seeing where some things are slightly simplified to make it easier to understand

It's really nice learning and finding evidence that you've learnt

silver_

Also I wanted to say thank you for making these videos I really do enjoy them. You are awesome! I am blind so I can't see the graphics unfortunately but your explanations are very nice and I love doing math in my head so it's enjoyable to see you theorize in my head about all the things that you explain

actualRocketScientist

"Hey, so, ready for that vacation?"

"I can't, the weak force may violate p-symmetry."

"Then there's only one thing we can do!"

"Stare at cold metal atoms!"

-A physic(s)al relationship.

garethdean

Known ways to break a CP law:
- super freeze a particle and add magnetic spin
- refuse to "pick up that can, citizen"

rullestaden

How does this man manages to make every single topic so interesting and enjoyable in each video?

pablocardona

This really makes me want to find an example that breaks CPT symmetry to see the entire science world implode. That would be funny *laughs in super villian*

KirbyMobile