National Portrait Gallery,Trafalgar Square,London,UK,thermogram. The colours show variations in temperature. The scale runs from white (warmest),through yellow,orange,red and purple to black (coldest). Thermography records the temperature of surfaces by detecting long- wavelength infrared radiation. Buildings reflect and produce a lot of heat,meaning that London is consistently warmer than its surrounding countryside. The National Portrait Gallery houses portraits of important and famous British people and,although in existence since 1856,opened on its present site in 1896. The dome can be seen as a major source of heat loss | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / McConnell, Tony |
Taille de l’image : | 2181 px × 2908 px |
Model Release : | Non requis |
Restrictions : | - |