What is an example of a heating process that involves radiation?

Microwave cooking is an example of a heating process that involves radiation because it uses electromagnetic waves, specifically microwave radiation, to heat food. In this process, the microwaves penetrate the food and agitate water molecules, generating heat from within. This is distinctly different from methods such as boiling water, which relies on convection as the heat is transferred from the hot water to the food. Steaming vegetables involves the transfer of heat through steam, which is a form of convection, and frying in oil similarly utilizes conduction as the heat from the hot oil directly cooks the food. Thus, microwave cooking uniquely exemplifies heating through radiation, showcasing a method that allows for quick and efficient cooking by directly affecting the food on a molecular level.