Capillary Action: Real-World Examples & How It Works

A common real-life example of capillary action is the absorption of water by a paper towel. When a paper towel is placed in contact with water, the water molecules are drawn up into the towel by the capillary action of the paper fibers. This is why paper towels are able to absorb spills and clean up messes. Other examples include:

* The rise of sap in trees

* The movement of oil through a lampwick

* The absorption of water by a sponge

* The spreading of ink on paper

* The wicking of water up a cloth