Which method of heat transfer involves the transmission of energy through electromagnetic waves?

The method of heat transfer that involves the transmission of energy through electromagnetic waves is radiation. Unlike conduction and convection, which require a medium (like solids or fluids) to transfer heat, radiation can occur through the vacuum of space. It involves the emission of energy in the form of electromagnetic waves, which can travel through air, space, or any transparent medium.

For example, the warmth felt from sunlight is a common illustration of radiant heat transfer, where the sun emits energy that reaches the Earth through the vacuum of space. This principle is also evident in various fire-related scenarios, such as how heat from a fire can warm objects nearby without direct contact. This understanding is crucial for fire investigators as it helps in analyzing fire dynamics and the spread of heat in different environments.