The type of electromagnetic radiation used in night-vision goggles is infrared radiation. Night-vision technology amplifies available light or detects infrared radiation emitted by objects, allowing users to see in low-light or dark environments. These goggles typically utilize image intensification technology to enhance images by capturing low levels of light and converting them into clearer visuals. This capability is vital for military operations, surveillance, and wildlife observation, providing enhanced visibility and situational awareness in darkness.