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What is capillary action? Please explain simply, Thanks a lot.

Answer 1

Here is the explanation I could think of...

This is the movement of fluid through a capillary or narrow tube when the cohesive forces between the molecules of the liquid are greater than the adhesion forces to the walls, causing the liquid to rise upward.

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Answer 2

Cooper Adams

Capillary action is the ability of a liquid to flow in narrow spaces without the assistance of, or against, external forces like gravity. It occurs due to the combination of cohesive and adhesive forces.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.