[kapital]

Why does a liquid that weat surface, form a concave meniscus? And where does the pressure come, that lifts fludid in capillary?

Thanks for answer.

[MrTeo]

http://en.wikipedia.org/wiki/Capillary_action
http://en.wikipedia.org/wiki/Contact_angle

Thanks for answer.

Not at all 

[kapital]

I have read this. I still do not know where there is pressure, that lifts fluid in capillary.
Can please somebody tell me this.

[Borek]

There is no pressure pushing the fluid, there is a force that pulls the liquid up - and this force acts on the phase boundary (which is where the contact angle comes into play).

[kapital]

Where does this forse arise from?

Or why there is not flat surface in capillary?(but curved)

[Borek]

It is all about intermolecular forces, which are different between molecules of liquid and between molecules of liquid and solid (walls of the tube).

[kapital]

Ok. But still, why doest that make a curved surfase and cappilary flow?

[curiouscat]

Ok. But still, why doest that make a curved surfase and cappilary flow?

What textbook are you using?

[kapital]

Why? Atkins physical chemistry

[kapital]

And there is some mension of pressure on page 643.