Drops of water tending to be rounded, flotation, soap bubbles, separation of oils in water, swimming, skimming flat rocks on a pond, ball being pushed up a hill, any stretched material. these are all examples of a surface reaction to environment. read more
Automotive products like Rain-X ( Hydrophobic Self Assembling Monolayers ) and others provide you with a clearer windshield by altering the glass surface and thereby changing the surface tension and contact angle between the glass and water Applied and Computational Fluid Mechanics. read more
Due to the surface tension, small objects will "float" on the surface of a fluid, as long as the object cannot break through and separate the top layer of water molecules. When an object is on the surface of the fluid, the surface under tension will behave like an elastic membrane. read more