What is the correct definition of conduction?

The correct definition of conduction is that it refers to heat transferred through solid material. This process occurs when heat energy moves from one molecule to another within a material without any movement of the material itself. For instance, when a metal rod is heated at one end, the heat travels to the cooler end through direct contact of the particles within the rod, demonstrating conduction effectively.

In this context, conduction is a fundamental mode of heat transfer, distinct from other methods such as convection, where heat transfer occurs through the movement of fluids (liquids and gases), and radiation, where heat is transferred through electromagnetic waves. Understanding conduction is crucial for interior design, especially when selecting materials for thermal insulation and energy efficiency in buildings.