Capillary action, also known as capillarity, is a phenomenon that occurs when liquid rises or falls in a narrow space, such as a thin tube or porous material, due to the combined effects of cohesion and adhesion. **Key aspects of capillary action include:** 1. **Cohesion**: This is the attraction between molecules of the same substance. In the case of water, hydrogen bonds cause water molecules to be attracted to each other.
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