Heat transfer through electromagnetic waves is known as

Heat transfer through electromagnetic waves is known as

• A. Radiation
• B. Conduction
• C. Convection
• D. Transmittance

Answer: (A)

Radiation is the transfer of heat by electromagnetic waves. This mode doesn’t require any material to carry the energy, so heat can move through air or even empty space. In a fire, radiant heat travels from flames and hot surfaces to objects at a distance, warming them without direct contact. Conduction needs solid contact for energy transfer through particle interactions, and convection relies on the movement of fluids. Transmittance describes how much radiation passes through a material, not how heat is transferred. So the term that matches heat transfer through electromagnetic waves is radiation.

Radiation is the transfer of heat by electromagnetic waves. This mode doesn’t require any material to carry the energy, so heat can move through air or even empty space. In a fire, radiant heat travels from flames and hot surfaces to objects at a distance, warming them without direct contact. Conduction needs solid contact for energy transfer through particle interactions, and convection relies on the movement of fluids. Transmittance describes how much radiation passes through a material, not how heat is transferred. So the term that matches heat transfer through electromagnetic waves is radiation.