Photocopying is the process of making a duplicate of a document or image using a machine called a photocopier. This machine uses light, heat, and chemicals to create a copy on paper. The original document is placed on a glass surface, and the photocopier scans it to produce an exact replica. The photocopying process is widely used in offices, schools, and homes for various purposes, such as printing reports, handouts, and personal documents. It allows for quick and efficient reproduction of materials, making it an essential tool in everyday tasks and communication.