A vacuum chamber is a sealed container from which air and other gases are removed to create a low-pressure environment. This process allows scientists and engineers to conduct experiments or tests without the interference of air molecules. Vacuum chambers are commonly used in various fields, including physics, materials science, and electronics. These chambers can vary in size and design, depending on their intended use. For example, they are used in space simulation to mimic the conditions of outer space, or in vacuum packaging to preserve food by removing air. The ability to control the atmosphere inside a vacuum chamber is crucial for many scientific and industrial applications.