A gas flame serves as an example of which type of heating?

A gas flame is an excellent example of radiation heating because it generates heat through the emission of infrared radiation. When you light a gas flame, it produces heat that radiates away from the flame, warming up the surrounding air and objects without direct contact. This transfer of heat occurs as the flame emits electromagnetic waves, allowing energy to be absorbed by nearby surfaces.

In the context of cooking or heating, the radiant heat from a gas flame can be felt even if you are not in direct contact with the flame itself. This characteristic is what distinguishes radiation from conduction, which involves heat transfer through direct contact between materials, and convection, which involves heat transfer through the movement of fluids (liquids or gases). Induction heating, on the other hand, relies on electromagnetic fields to directly heat cookware, rather than using a flame. Therefore, the nature of heat transfer from a gas flame aligns perfectly with the principles of radiation.