Electric fan,coloured X-ray. This consists of a base stand,in which simple electrical wiring and circuitry is seen,and a fan enclosed in a grille. Three switches (lower right) control the speed of the fan,which is powered by electricity. The fan has a cooling effect by moving air around a room. This can carry excess heat away from a person by increasing evaporation of sweat,though this does not work so well in humid atmospheres | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Gustoimages |
Taille de l’image : | 3994 px × 4363 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |