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.

[@fidakhanchey]

Observation skills 👍🏼👍🏼👌👌👌👏👏👏😂

[@ellabecket2123]

YES... A Bug was running on your shelf 😜😜🐛🐛

[@lunalullaby120]

Pay attention to the class lmao

[@DavidM-jj1bw]

me having the attention span of a mosquito

[@neil_surya]

@Aman Dhumal 1:38

[@shubhamupman7260]

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

[@karthikreddyvangeti6790]

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.

[@pablo9364]

Yes agreed. Well he was nearly right

[@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.

[@user-hv6ef9ie1g]

Thanks for showing us the experiment!

[@himankberwal5481]

great video for understanding the practical concept !!

[@simonriley4180]

Thank you for the easy explanation

[@adbhutcivil]

thank you sir this helped me in visualisation

[@MohaMMaDiN55]

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

[@TheUrbanPinoyBoy]

when sweat is formed the fibrous mesh has small diameter pores that pull the sweat from your skin. lol sorry for the year response XD

[@Nishantk10]

@@TheUrbanPinoyBoy its never late

[@ShareInfos516]

That was a well explained video. Thanks

[@mayurbharadkar2248]

Wow

[@mayurbharadkar2248]

Wow

[@anderson573]

did any body saw the cockroach on the book stand

[@SogMosee]

+Anderson gonzales gutierrez lmao

[@bellinghammond]

+one milliongamers
F that, did you see the urine in the glass?

[@yamikawaii321]

I saw it

[@clairedougherty1687]

no

[@bluekeet]

lmao, good eyes

[@Ekta.Prasad_.]

Thanks sir ✨ Such a informative video

[@shivamuniyal6680]

Very helpful video

[@Aadarsh_Raj]

0:27

[@enverkaancabuk73]

what is the liquid do you use?emergency

[@sadiqkps]

Colored water

[@Tech_Gamers]

Pe

[@emerlander]

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

[@nagarajanm1576]

Thanks a lot

[@matthewgamer797]

nicly explained

[@kannadiga_saleem943]

Very informative

[@virupannamedikinal]

Thank you

[@khondokerazizulhaque357]

Superb

[@beunited2069]

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

[@visiblehuman3705]

Eventually the force of gravity overtakes the attraction of the water to sides of tube I believe, that’s why with a more narrow tube it can go higher.

[@shivambhandare2077]

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

[@yhtawsa]

Quick and easy video. Thank you sir.

[@pratapsinhasingh8040]

It was such an amazing explanation .☺

[@neethandwrittennotes6196]

Thank you..to the point and helpful 🙏

[@tridevjha255]

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

[@karmarose5250]

Not the roach running in the back😭 left side top shelf, 1:37 -1:43

[@physicsnumericalsolution]

thank you sir

[@esecallum]

can you use it to sterilize water??

[@adityajadhav6457]

Perfect explanation

[@keteshwarimanthapuram6063]

👍👍👍

[@physicsphilia5997]

Can I use some parts of it for my UA-cam video

[@kushalnagar7569]

it helped alot thank you sir

[@siddid7620]

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

[@jovinavaswani5976]

Very nicely explained. Thank you!

[@akinnubisamuel968]

What would happen if we performed this experiment in space?

[@apl.2018]

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

[@anthonytovar6768]

Why would it go higher with a thinner tube?

[@MohaMMaDiN55]

Anthony Tovar
I think as my teacher told me is that when the weight of the water in the strew becomes equal to its surface tension force that’s acting upward, the water level stops from flowing.
that’s why as a narrower the strew is, the level of water is higher.

[@Fuphu]

If you blow through a star with a big opening on either end the wind on the other side will be weak, if the straw has small openings then the wind tends to be stronger. That's the basic idea.

[@vbstein2]

The height of the water is defined by when the capillary forces (i.e., the adhesive forces described in the video) balance the gravitational pull on the water. The capillary forces are proportional to the circumference of the tube. The weight of the water is governed by the volume of water that is pulled up the tube, which is proportional to the cross-sectional area of the tube. The ratio of the circumference to the cross-sectional area is 2*pi*r / pi r-squared. As r gets small, this ratio becomes large. As r gets big, the ratio becomes small (i.e., at infinite radius, the ratio goes to zero).

[@gayatrikheralia2580]

Thank you so much

[@ashok_meghwal__7]

Capillary... Were most interesting

[@maxinebonifacio2237]

thank you sirr

[@jasminarashikh2151]

Nice class

[@shadov5159]

Huge thanks🙏

[@layefamax1308]

Good to know

[@YashChoudhary_]

Thanks sir 🙏🙏🙏🙏🙏

[@user-sd5dz3or2s]

고맙습니다

[@ayushmishra7765]

This is actually done in transpiration pull theory

[@Avi-od4cz]

Thanks☺☺

[@vishwashraushan8010]

Thanks

[@shamsulazam1485]

helpful video

[@KClassScienceChannel]

This #Physics video shows a very fascinating - and important, phenomenon. #Capillarity ua-cam.com/video/PP9mn-X9i2Q/v-deo.htmla

[@atisheygupta6028]

❤️✨

[@viveknat777]

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

[@MVBPRINSKUMAR]

No

[@vbstein2]

I think it would rise, but not as high. Without a blind end, the height to which the water rises is governed by the when the force of gravity acting on the water column balances the capillary pressure (which arise from the adhesive forces described in the video). With a blind end, as the water rises (due to the capillary pressure), the gas in the tube would become compressed, and the resulting increase in air pressure would also act to limit the height to which the water rises, in addition to gravity.

[@animehub1611]

Is this a level

[@AnkitKumar-sm1zs]

I'm not gonna lie that does not seem colored water at all..😅

[@markphiri51]

i used tape water and a plastic straw but the rise in the straw is below the water level

[@khaledalsalahi823]

🌚

[@Adrenadriven7]

Did anybody else spot that insect behind him moving at 1:35

[@smooth5382]

Sheri enna

[@nishpakshagupta8331]

That was bear😂😂

[@faisalal-ghamdi3267]

KSU

[@AnkitKumar-sm1zs]

We people - Studying Physics
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That salamander in the beaker to this guy's right on shelf listening to all the shit he can't understand but has to listen 'cause what else can he do??
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. Maybe a she, I'm not gender biased...

[@harshdhakad2161]

Did i just saw lizard in a bottle in the background

[@medicoanu7210]

😄

[@syedamaira152]

hi

[@kanishk2345]

Exam : derive an expression for height of liquid in a capillary tube

[@jerrymouse36]

Lz

[@alhomamsalah]

you don't look Indian

[@climbingtogether]

Thanks a lot

[@tonyferguson4350]

Thankyou sir

[@sangharsh2413]

Thanks sir