Capillary action dissected

Capillary rise in small tubes is a familiar phenomenon that most of us have seen. But why is it that water rises higher in thin tubes than in thick tubes? This animation will focus on the forces at work in capillary action and derive an equation from first principles known as Jurin’s Law. Enjoy!

For further reading:

[fatimakhan-eify]

woah that was very helpul, beautifuly elucidated all the concepts involving in this topic.

[AdamaRamaWADE]

This was such a detailed and comprehensive explanation, just what I needed! Thanks!

[shandusa]

There will a day when capillary action will power the world.

[ahmadsaqibqaeym]

Hello sir, I am studying bioengineering. This video was very useful to learn capillarity topics in my Fluid mechanics class.
I really appreciate it. Thanks a lot.

[leroyjenkinz]

Thank you I really appreciate your video, My Current project has me running past them And I Realize, I really have no idea what they are what they do.But now you help solve that in every way possible.Thank you very much appreciate it.

[shubhsoni]

1:02 a small mistake to point out- g is not the gravitational constant rather G is, g is the acceleration due to gravity with the value 9.8ms^-2 and G has the value 6.67*10^-11
otherwise a good explanation

[drimanbanerjee]

Next level concept i got to learn on my way to be a dr

[nurrizzatimohammadzambree]

sir, regarding the upward force section, i still don't get it why we're multiplying the circle circumferences with the constant of upward force, would u mind explain it more...

[冯孝伟]

Could melted aluminum also use the equation? for example, melted aluminum adhere to non-melted aluminum?

[azraykstip]

what happens when the temperature increases? is there a decrease on capillary rise?

[mddelman]

Very informative video, thanks. Do you have time to answer a question for me? I have a small vessel filled with water. A thin tube (1.5mm inner diameter) hangs an arbitrary distance below the surface and the top is attached to a valve that allows me to release ink into the water. When the valve is open, ink flows freely. When I close the valve, a vacuum is created at the top of the tube, so the flow of ink stops. However, through what I assume is capillary action, water from the vessel is pulled into the tube, apparently displacing ink, which then leaks into the vessel. This continues until all of the ink in the tube has leaked out. My question is, is there any way to prevent this leakage from happening? I cannot change the viscosity of either the ink or the water. The tube could be modified if that would help, but not to the extent of using a much larger diameter tube.

I hope you find this question interesting and I'd be most appreciative if you can answer it. Thanks very much!

[XORCyst]

I came here because I was watching the anime “Dr. Stone” during a totally unrelated scene and I’m glad I did

[thestrongman]

thanks for the video, I guess if the diameter in the tube is less than 0.1mm, there wouldn´t be limit for the height.

[akinnubisamuel]

What would happen if we performed this experiment in space?

[raghav]

thank you thank you thank you so so so muchhhh