Description:
A fan is an electrical device used to create airflow and provide cooling or ventilation in homes, offices, and industrial spaces. It consists of rotating blades mounted on a hub, an electric motor, a protective guard, and a control system. Fans come in different types such as ceiling fans, pedestal fans, table fans, and exhaust fans. They are designed to improve air circulation, reduce heat, and maintain comfort in enclosed environments.

Operation:
The operation of a fan is based on the conversion of electrical energy into mechanical motion. When the fan is switched on, electric current flows into the motor, causing it to rotate the attached blades. As the blades spin, they push air forward, creating a continuous airflow that circulates within the room. Speed controls allow the user to adjust the rotation rate of the blades, increasing or decreasing airflow. This movement of air helps cool the body through evaporation of sweat and improves ventilation in the surrounding space.