Capillary Action
Preview image of Capillary Action simulation

Liquids (such as water) that wet glass climb upward on the surfaces of their containers to form a concave meniscus. This occurs when adhesive solid-liquid intermolecular forces are stronger than liquid forces. Such liquids will rise in a narrow capillary tube until a balance is established between the effects of surface tension and gravity. The capillary rise increases sharply as the tube is made narrower.

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  Author: S. M. Blinder. Open content licensed under CC BY-NC-SA

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