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Thermal imaging

Thermal imaging cameras

Thermal cameras are different from a “camera”. Although we call them that, in reality this observation system is more like sensors. In order to understand more easily how they work, the principle of an ordinary video camera should be left aside. E.g. FLIR takes pictures of heat, not visible light. Heat (also called infrared or thermal energy) and light are both part of the electromagnetic spectrum, but a camera that can detect visible light cannot see thermal energy, and vice versa