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History
Firefighting foam
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Firefighting foam is a foam used for fire suppression. Its role is to cool the fire and to coat the fuel, preventing its contact with oxygen, thus achieving suppression of the combustion. Firefighting foam was invented by the Russian engineer and chemist Aleksandr Loran in 1902.
Firefighters sprayed foam on structures in the Mammoth Hot Springs complex on 10 September 1988 during the Yellowstone Fires
Firefighters sprayed foam on structures in the Mammoth Hot Springs complex on 10 September 1988 during the Yellowstone Fires
A fire demonstrating Class A foam in a CAFS system
A fire demonstrating Class A foam in a CAFS system
Foam
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Foams are materials formed by trapping pockets of gas in a liquid or solid.
Soap foam bubbles
Soap foam bubbles
Cleaning sponge
Cleaning sponge
Top of a foamy drink
Top of a foamy drink
Schematic stress-strain curve of an elastomeric foam, demonstrating the three regions which are linear elastic, cell-wall buckling, and cell-wall frac
Schematic stress-strain curve of an elastomeric foam, demonstrating the three regions which are linear elastic, cell-wall buckling, and cell-wall fracture. The area under the curve specified represents the energy per unit volume the foam can absorb.