A microwave oven is a ubiquitous kitchen appliance designed primarily for rapid heating, cooking, and defrosting of food and beverages, utilizing electromagnetic radiation in the microwave frequency range (typically around 2.45 GHz). Its core component is the magnetron, a high-powered vacuum tube that generates these microwaves. These waves are channeled into the metal-walled cooking cavity via a waveguide. Inside the cavity, the microwaves are reflected off the walls and absorbed primarily by water, fat, and sugar molecules within the food, causing them to vibrate extremely rapidly through a process called dielectric heating.