Capillarity and Surface Tension | Surface Tension | Physics

In this activity we take two capillary tubes of different diameters and place them in a beaker of coloured water as shown. We see that the water rises in both the tubes and that the narrower tube has a higher level of water. As water adheres to glass, the water molecules near the glass walls climb up the glass surface due to adhesion. In this process they also carry up the water molecules that are away from the walls due to surface tension and a small amount of water rises in the capillary tube, forming a concave meniscus. The height to which the water rises depends on the diameter of the tube. In plants, the water is absorbed by the roots and rises up the trunk due to capillary action.

[neil_surya]

This was such an informative video. BTW, at the end of the video, I noticed a very large bug of some kind running along your shelf.

[shubhamupman]

Wow great explanation. So simple and easy to understand especially with the examples. Thanks

[LateLaLa]

Thanks for this. I have to do a lab at home for school, but don’t have any capillary tubes, so this helped a lot.

[karthikreddyvangeti]

Good information
Slight correction that it's not the capillary action which makes the water to reach the top of the tree, as the xylum tubes can rise only 1m with the given diameter.
So it's the negative pressures that it is being created at the leaves when it evaporates and also the continuous column of xylumn tubes which are filled with water from the beginning without presence of any air bubbles.

[himankberwal]

great video for understanding the practical concept !!

[MohaMMaDiN]

How is that the capillary action used to remove sweat from the surface of skin?

[shivambhandare]

why does the solution in capillary tube occur to be transparent even though the solution is yellow?

[enverkaancabuk]

what is the liquid do you use?emergency

[physicsphilia]

Can I use some parts of it for my YouTube video

[anderson]

did any body saw the cockroach on the book stand

[Civilclips]

thank you sir this helped me in visualisation

[beunited]

Why it don't continue to rise and come out why it stops after a certain height

[apl.]

I bet no one else noticed the bug on the top shelf almost at the end of the video 😎🤣

[tridevjha]

What if the width of the Tube is infinitesimally small will the water reach all the way to top .

[emerlander]

Very nicely explained video. Short and to the point. Loved it. Thanks

[siddid]

what magic water are you using, I can not recreate these results at all.

[akinnubisamuel]

What would happen if we performed this experiment in space?

[ShareInfos]

That was a well explained video. Thanks

[anthonytovar]

Why would it go higher with a thinner tube?

[viveknat]

does water rise in a capillary tube with blind end at the top?