A fan is a device that creates airflow by the movement of blades, typically powered by an electric motor. The blades rotate around a hub, known as an impeller, rotor, or runner, and are usually enclosed within a housing to direct airflow and ensure safety. Fans are used for various purposes, including personal comfort, ventilation, cooling electronic equipment, and more. They work on the principle of generating air flows with high volume and low pressure, which can facilitate evaporative cooling of sweat and enhance heat convection around the body or an object.(i made this 3d model for practice, you free to use it)