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How does the walking water experiment show capillary action?
Updated: 11-Apr-2025

In this experiment, colored water moves from one cup to another through paper towels. The water climbs the towel fibers using capillary action, which happens when adhesive forces between water and material are stronger than gravity.

The colors blend in the empty cup, creating a visual display. This mimics how water moves through plant roots and stems, showing an essential principle of fluid behavior in both science and nature.

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