Infrared lighting refers to a type of light that is not visible to the human eye but can be felt as heat. It is part of the electromagnetic spectrum, with wavelengths longer than visible light but shorter than microwaves. This type of lighting is commonly used in various applications, including heating, night vision devices, and remote controls. Infrared lights are often utilized in heating lamps for therapeutic purposes, as they can penetrate the skin and provide warmth. Additionally, security cameras equipped with infrared technology can capture images in low-light conditions, making them effective for surveillance at night.