深夜亚洲福利久久

10.9 Surface properties of liquids

 

The Hyperphysics website has a comprehensive summary of  (called 'wall tension' on their website but the model can be applied to liquid surfaces as well as to films, membranes, etc.). The concept map includes a number of interesting applications in biology and medicine.

The image on the right shows an insect that can freely run along the surface of a quiet pond. It's tiny mass and the geometry of its legs allow it to be supported by the high surface tension of water.

Hyperphysics image 

Understanding Physics

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Mansfield and O'Sullivan, Understanding Physics, 3rd ed., John Wiley & Sons, Chichester (2020),

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