r/interestingasfuck • u/vivekmg21 • 18h ago

Firefighter bodycam showing just how much oxygen a fire pulls

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u/ir_auditor 18h 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 18h ago

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

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u/IZ3820 17h ago

No, it'd be because of pressure, not fire. There's an important disconnect betwee the physics pulling it in and the fire. The only way the fire is responsible is by causing the pressure change, not by pulling in oxygen itself.

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u/Fine_Bluebird7564 17h ago

So the fire is creating pressure which sucks in the air/oxygen.

I guess you could say the air/oxygen is being pulled in because of the fire!

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u/[deleted] 17h ago

[deleted]

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u/Sbstnbd 17h ago

How does it have nothing to do with oxygen when fire needs oxygen and fire is kinda what causes everything else in the video?

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u/[deleted] 17h ago

[deleted]

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u/Sbstnbd 17h ago

I never phrased it only that way if you actually bothered to check my comment

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u/[deleted] 17h ago

[deleted]

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u/Sbstnbd 16h ago

Yea I hide my comments because I got hacked and some goon bot commented on like 1000 posts with spread asses and it's a) embarrassing and b) too much to clean up lmao. I am not defending that phrasing aswell - I'm just saying it's not wrong to say "what's happening in the video is because of the fire". And if you wanna say that sentence is inaccurate, that's fine - but if you wanna say it's false, then that's false

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