A parachute is a device used to slow down the descent of a person or object through the atmosphere. It typically consists of a large fabric canopy that opens up when deployed, creating drag and allowing for a controlled landing. Parachutes are commonly used in activities like skydiving and military operations. The basic principle behind a parachute is air resistance, which increases as the parachute expands. This resistance counteracts the force of gravity, enabling a safer landing. Parachutes can be made from various materials, including nylon and silk, and come in different shapes and sizes depending on their intended use.