Capillary Action

Definition

Capillary action is the ability of moisture to flow through a membrane or narrow space without opposition from natural forces such as gravity or wind.

Purpose

Capillary action plays a critical role in various natural and industrial processes, including the movement of water in plants, the operation of ink pens, and the distribution of moisture in building materials.

Examples of Use

1. Plant Physiology: Transporting water and nutrients from roots to leaves.
2. Ink Pens: Enabling ink to flow smoothly to the writing tip.
3. Building Materials: Causing moisture to rise through porous materials like bricks and concrete.

Related Terms

• Surface Tension: The elastic tendency of a fluid surface that makes it acquire the least surface area possible.
• Cohesion: The attraction between molecules of the same substance.
• Adhesion: The attraction between molecules of different substances.

Notes

In construction, capillary action can lead to moisture problems in buildings if not properly managed. Effective moisture barriers and drainage systems are essential to mitigate its effects.