Making waves: The power of concentration gradients - Sasha Wright

The constant motion of our oceans represents a vast and complicated system involving many different drivers. Sasha Wright explains the physics behind one of those drivers -- the concentration gradient -- and illustrates how our oceans are continually engaging in a universal struggle for space.

Lesson by Sasha Wright, animation by Andrew Foerster.

[jrhusney]

It's wonderful how this video explores how concentration gradients are found acting at every scale and across so many disciplines of science – physics, chemistry, biology. It has me seeing them everywhere! Great writing and animation. Bravo!

[iamgracefully]

I like the way of this presentation. I felt like I'm the one who was been transformed into something else and gone through all of those adventures. So wonderful! Thank you TedEd! Awesome video! 💕

[quynhphuongtran]

I have to say that the animation of this video is absolutely amazing 🤯

[richeldalapera]

I understood it clearly, thanks!

P.S. For the people out there saying that this video didn't meet the expected standards, learn first more about concentration gradient, osmosis, water polarity and diffusion, a lot of videos explains very much and you can grasp the information better than your science teacher, lol, I actually think about that because I spent 1 hour on every subject in our school and I'm just getting bored, we learn more visually than auditory.

[Chocolatebutterjelly]

"Well honey, I went out fishing, but I got abducted by aliens, and then I was water for a bit, and then I lost the fishing rod and my hat but then a fish jumped into my hands so it's all G"

[anubhakohli]

Please make more videos like this... those who agree may like this comment....

[supermegauberful]

Salt water however tends to move down, not up as it's density is larger. Explaining thermohaline circulation as driven by density differences (caused by Temperature and Salinity) makes more sense.

[AddictedtoProjects]

Awesome animation and narrative. Makes it very easy to understand! :)

[deadasfak]

I think I would have understood it better without the realestate comparison

[loriefranceschi]

Nice to learn how it works, but I agree with srinesh shenoi the movie was not up to TED usual movies.

[gulshanteens]

I never saw any similarity in ocean currents and electric currents until I watched this video.

[billschmoker]

Hmmm, no mention of water density differences that drive deep ocean circulation or prevailing winds that drive surface currents.  Next time get a physical oceanographer on board the animation team.

[shraka]

That was a bit needlessly complicated and didn't really answer the question clearly.

[AlanKey]

4:25 "electrons squashed together in one place"
Is this accurate? I understand how that model works for capacitors (where charge density can be significantly greater on the negative plate) but for a light switch wired up to the mains...?
Surely the number of electrons per unit volume is the same throughout the circuit?

[ltericdavis]

THOSE DANG ALIENS!! THEY GOT ME AGAIN!!
But thanks for the fish.

[arisromani]

I am not sure i get it but anyway, i will assume that i understood the whole concept, molecules want to go deeper when they are hot because there is more space there and they will end inevitably and when they get cold enough they rise again, and the salty part works in a similar way. So my question is this, if i have a cup with water in it, throw some salt into the mix, and put a warming lamp on top will it create a small tide into the cup ? ^.-  

[JibHyourinmaru]

i'm having a hard time trying to understand this video XD

[xwhateva]

So it's kinda like convection? Is that the right word in English?

[kingmorales]

If solar helps move the water but at night what does it help to move the water ???

[HunterRodrigez]

when i was a child i always thought that the ocean or any other body of water would stay still and form a mirror like surface if you took out all the people and Boats/ships in it...