Infrared night vision is a technology that allows people to see in low-light or complete darkness by detecting infrared radiation. This radiation is emitted by all warm objects, including humans and animals. Night vision devices, such as goggles or cameras, convert this infrared light into a visible image, enabling users to see clearly in the dark. There are two main types of infrared night vision: active and passive. Active night vision uses an infrared light source to illuminate the area, while passive night vision relies on existing infrared radiation. Both types are commonly used in military, security, and wildlife observation applications.