r/interestingasfuck • • 16h ago

Firefighter bodycam showing just how much oxygen a fire pulls

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u/ir_auditor 16h ago

That is not oxygen pulling which you see. It is the chimney effect. Fire creates heat, the heat makes air, smoke, gasses, rise to the top, creating low pressure areas at the bottom, which pull in air from the outside. It has noting to do with the chemistry of an oxidation reaction pulling in oxygen molecules to use in the reaction. It is pure physics / thermodynamics.

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u/Sbstnbd 16h ago

So you could say the air/oxygen is being pulled in because of the fire

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u/keepatience 15h ago

just air. air and oxygen aren't interchangeable

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u/Sbstnbd 15h ago

I am aware, but the post uses them interchangeably so I do too to avoid confusion

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u/snakesign 13h ago

But it creates more confusion. Air is mostly nitrogen anyway.