Contact Angle and the Young Equation

The contact angle a liquid drop makes with a solid surface is a function of the surface energies of the liquid, solid, and liquid-solid interface. This relationship is described by the Young equation.

[@umar11ism]

man I went through so many useless explanations before I found this. thank you for the help

[@nloukinova]

Thank you!

[@sholasholade]

Thank God I found this 🙏🏾

[@wadhax5191]

Thank you it was very helpful and clear

[@shabbirahmed1494]

very useful lecture. Hope more in future on this topic...

[@benjamintan90s]

A good mini lecture!

[@hagencalpoly6773]

+Tan Ben Thanks!

[@lufertu]

Great explanation, congratulations. Thank you!

[@diegosalvatierra7845]

very useful, thanks

[@anag8782]

Not very convincing, yet clear explanation. Why do the the surfance tension vectors (or surface forces) point in those directions? (min 4:46)Thanks a lot for this video.

[@schaz7563]

Creation of any surface (a boundary between two media) generally results in a higher potential. All the forces point in their respective directions to minimize the surface areas of the boundary they are associated with.

[@bugveyronFTW]

@@schaz7563 Hi, could you expand on this further please? The one that confuses me is the surface tension of solid and vapour. Why does that point to the left? I do not understand why there is a force between the solid and vapour pointing to the left. If you could explain that it would be great, thanks.

[@salimblackcat1915]

@@bugveyronFTW any responses after 3 years

[@bugveyronFTW]

@@salimblackcat1915 I assume I figured it out before my exam but I can't remember anything about it anymore haha, sorry I couldn't be of any assistance

[@eshaborah5299]

It was very helpful 😊

[@hirunrashentha1082]

Thanks alot