Infrared cameras are devices that capture images using infrared radiation, which is not visible to the human eye. They detect heat emitted by objects, allowing users to see temperature differences in a scene. This technology is commonly used in various fields, including building inspections, firefighting, and surveillance. These cameras work by converting infrared radiation into visible images, often displaying warmer areas in bright colors and cooler areas in darker shades. This capability makes them useful for identifying issues like heat loss in buildings or locating people in low-visibility conditions, enhancing safety and efficiency in many applications.