Gas diffusion. Gas diffusion is demonstrated using nitrogen dioxide (NO2) gas. Nitrogen dioxide is heavier (more dense) than air and has a characteristic brown colour. A jar filled with nitrogen dioxide is placed under an inverted glass (left frame). After 3.5 min the gas is seen diffusing into the volume between the glass and the jar (centre frame). After 13.5 min the gas uniformly fills the whole volume under the glass (right frame). | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Science Source / Turtle Rock Scientific |
Taille de l’image : | 6700 px × 3746 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |