TONY MCCONNELL / SCIENCE PHOTO LIBRARY TONY MCCONNELL / SCIENCE PHOTO LIBRARY
Houses and road, thermogram. A thermogram shows the variation in temperature on the surface of an object, measured by the long-wave infrared radiation it emits. The temperature scale is colour-coded and runs from black (coldest) through blue, green, yellow and orange to red (warmest). This imaging technique can be used to check the energy efficiency of buildings. The roof of the house at left appears red because heat is being lost from its loft space.
Model release not required. Property release not required.