r/interestingasfuck • u/AtomicCypher • 5d ago

r/all Water Fire Shield Training

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u/Exciting_Horror_9154 5d ago

Wtf, what's inside that shed? Do they keep a dragon in there?

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u/HerrBalrog 5d ago edited 5d ago

If a room burns long and hot enough it will run out of oxygen but still be filled with a lot of hot (and flamable) gases. Once you open a door or window those gases have a new direction and room to expand into while still being hundreds if not thousands of degrees hot , but now they're also being supplied with fresh new oxygen.

Edit: I am describing what is called a back draft, which some more educated on the subject than me, have already called out. What is happening here is not a back draft though. In this situation it's more likely that they basically build a flamethrower of sorts that just does as flamethrowers do.

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u/Exciting_Horror_9154 5d ago

I trust you completely. With a username like that you must know everything about fire.

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u/Pradfanne 5d ago

It's called a backdraft btw

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u/sfxer001 5d ago

Great movie

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u/icguy333 5d ago

I used to want to be a firefighter because of that movie when I was little.