Dry ice. A fog-like vapour spills off a dish of dry ice. Carbon dioxide is a colourless gas at room temperature but becomes a liquid under com- pression. If the liquid is allowed to expand rapidly to atmospheric pressure,it cools suddenly and freezes to dry ice - a white snow-like solid. Dry ice sublimes (turns straight into a gas from the solid state) at -78.5 degrees Celsius (195 degrees Kelvin). If mixed with water it produces thick clouds of fog,as seen in theatres and discotheques | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Winters, Charles D. |
Taille de l’image : | 5339 px × 3629 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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