Light bulb switched off. This incandescent bulb contains a tungsten filament inside the glass,which glows as an electric current passes through it | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Terry, Sheila |
Taille de l’image : | 2764 px × 4266 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |