Question

What is capillary action or capillarity.

Answer 1

Answer:

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Capillary action is defined as the motion of liquids inside very narrow spaces without the assistance of, and most of the time in opposition to, external forces such as gravity.

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Answer 2

Answer:

Capillary action (sometimes capillarity, capillary motion, capillary effect, or wicking) is the ability of a liquid to flow in narrow spaces without the assistance of, or even in opposition to, external forces like gravity. ... It occurs because of intermolecular forces between the liquid and surrounding solid surfaces.

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