WORLD OF WARMTH, ARNO VLOOSWIJK / SCIENCE PHOTO LIBRARY WORLD OF WARMTH, ARNO VLOOSWIJK / SCIENCE PHOTO LIBRARY
Zipping up a cardigan, thermogram footage. Thermography records the temperature of surfaces by detecting long-wavelength infrared radiation. The colours show variations in temperature. The scale runs from white (warmest), through yellow, orange, red and purple to blue (coldest). A colour-coded temperature scale is at right, ranging from 18 degrees Celsius (dark blue) to 34 degrees Celsius (white). The warmth of the skin of the upper chest and throat (yellow) contrasts with the colder insulating layer of the cardigan (purple) and the colder temperature of the hand.
Model release not required. Property release not required.