Capillary Action

A thin hollow tube sits in a beaker of water. The water level inside the tube is higher than the water level in the beaker due to capillary action.

Figure 2.17 (OpenStax, Biology 2e) caption: The adhesive forces exerted by the glass' internal surface exceeding the cohesive forces between the water molecules themselves causes capillary action in a glass tube. (credit: modification of work by Pearson-Scott Foresman, donated to the Wikimedia Foundation)

(Source: OpenStax)

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    Capillary Action Original Figure

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    Capillary Action Figure Illustrator

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