Dry cleaning
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Dry cleaning is any cleaning process for clothing and textiles using a solvent other than water. Clothes are instead soaked in a water-free liquid organic solvent typically inside a specialised dry-cl
A dry-cleaner in East Germany, 1975
A dry-cleaning shop featuring a dry-cleaning machine, washer/dryers, stain removal station and hung clothes, inside a mall in Turkey, 2025.
A second generation Italian dry cleaning machine used in France in the 1960s
Older dry cleaning machines had analogue control panels and punched cards for cycle programs.
Supercritical fluid
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A supercritical fluid is a substance at a temperature and pressure above its critical point, where distinct liquid and gas phases do not exist, but below the pressure required to compress it into a so
Figure 2. Carbon dioxide density-pressure phase diagram
A black smoker, a type of hydrothermal vent