Mercury thermometer showing a room temperature of 24 degrees Celsius. The mercury thermometer works as mercury,a liquid metal,expands evenly as the temperature increases. As it expands it fills more and more of a narrow tube,which is marked with a scale in degrees | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Andrew Lambert Photography |
Taille de l’image : | 3793 px × 5598 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |