Panorama of a building Parked car at a distance of 30 m Hot spot detection on a car Hot spot detection on a car Car shortly after driving Heated brake disc Underfloor heating around a toilet Building facade 1.80 m tall adult at a distance of 20 m in complete darkness 1.80 m tall adult at a distance of 50 m in complete darkness Footprints and feet Cat Face of an adult Face of a child Multimedia PC Hot water Hot water Partially blocked drainpipe WLAN module in normal operation WLAN module in normal operation 32 Bit microcontroller 3 V and 1.8 V voltage regulators Passively cooled multimedia PC Passively cooled multimedia PC Overheated notebook Inefficient network switch Heat distribution on a LED-Spot Oil cooled high voltage transformer Ducks on a pond – 10 m distance Rabbit on the forest edge – 20 m distance A herd of deer on the forest edge – 200 m distance Propeller plane at 300 m distance Wall heating Adult and two children Dog in the dark – 5 m distance Heat bridge on a window Two fishermen across a 200 m wide river