Crazy pool vortex

This unique phenomenon can be easily reproduced in a pool on a sunny day.

If you liked this video check out these:
How to Make a SQUARE Vortex Ring!
Why Hawaii's volcano is so UNUSUAL

Many thanks to the Vlogbrothers for their sponsorship of this video!

Also thank you to Daniel Walsh for answering many fluid dynamics questions, to Jacob Schalch for filming the burning penny, and to Justin and Brendan for their donations to support Physics Girl!

[peteryoung]

I hesitate to bring religion into this, but the first image you show is a perfect representation of The Flying Spaghetti Monster.

[tibees]

I love science videos - wish I could make some this interesting

[shmesaalrawahi]

SHE EXPLAINS IT SO WELL I WISH SHE TAUGHT ME PHYSICS

[elchaffinch]

Physics girl: try this at home when you're pool is too cold to swim in.

Me: I've got a pool? So Cool!

[ncdavelife]

"Happy physicsing!"

"Nowadays, any noun can be verbed."
- author unknown

[christiansanchez]

That's not what I was expecting when she added the food dye

[Sancarn]

This is why I signed up to do Theoretical Physics at University.
This is exactly what we didn't do during my course on Theoretical Physics at University.

Sad times.

[exetercollegeuktechnologyc]

Physics Girl - I've just found this video and it's brilliant! - I'm going to show it to all my pre-university and university level students when they are starting their learning for hydrodynamics. Many Thanks

[coreywild]

WOW where di you find all these people who are actually interested in learning something!!?? Well done!! Nature is AWESOME cool Vid!!

[lineikatabs]

i'm not sure which is cooler - the phenomenon or the explanation. 

[BinkieMcFartnuggets]

So in order to stop hurricanes we just need to destroy god's plate.

[AppliedScience]

The food coloring trick is super cool. Really great demonstration! Thanks!

[Jacob-fvco]

It's the secret to creating wormholes! All we need is a 4 dimensional plate and we can make a tunnel through the fabric of space and time!

[acapellascience]

Yess!! Now I have a video to show people when they ask why I'm always doing this with my miso soup.

[aMulliganStew]

2:07 -- the food coloring idea was brilliant!

[borrapandu]

i got a doubt after watching this if simultaneously formed to vortexes travel together, can it be related to einstein's warp holes, crazy link but i was unable to put what is on my mind into the words

[tnekkc]

I don't know how many people worked on this video, for how long, or what budget.... but it is a real accomplishment.
You deserve 4 million views.

[MelindaGreen]

I didn't know that the two vortices are really the two ends of a spinning tube. It nicely explains why they come in pairs, and the idea of using dye to make them visible is clever and beautiful. I learned something really neat today!

[cailinanne]

I did this with my little niblings and they LOST THIER MINDS 😂

Thanks for teaching us Dianna, I really hope you recover soon. ❤

[Rapbando]

Well you tell how it formed but not why it lasts so long and the main reason you didn't, is because mainstram science cannot admit the natureal laws, because they would reset the matrix.