Clouds showing a wave-like structure in Washington DC, USA. Wave clouds are known as Kelvin-Helmholtz clouds, after scientists Lord Kelvin and Hermann von Helmholtz, who studied the instabilities that form where there is a velocity difference at the interface between two fluids or fluid layers (in this case caused by different densities of air across a temperature inversion) | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Williamson, Mark |
Taille de l’image : | 5163 px × 3456 px |
Model Release : | Non requis |
Restrictions : | - |