Capillary Action
Capillary action is the ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity. This occurs because of the combination of two opposing forces: cohesive forces, which cause the liquid to form a continuous, uniform surface, and adhesive forces, which cause the liquid to be attracted to a solid surface. In space and astronautical engineering, capillary action plays an important role in the behavior of fluids in microgravity environments, such as those found in spacecraft and space stations. Understanding capillary action is crucial for designing fluid systems that work effectively in these environments.
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