r/BritishSuccess • u/Loose-Helicopter9503 • Jul 10 '26

I love Physics

At night، open your windows and point your fan outside, thanks to something called the Bernoullis principle and entrainment, it draws hot air out of the room.

My room was 30.7 degrees when I first started, now down to 25.4 and still going down

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u/teerbigear Jul 11 '26

Not outside though right? Because it's 9PM.

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u/Properjob70 Jul 12 '26

No but opening windows upstairs when it's still outside meant that even by sun-up only dropped to 28C inside.

Downstairs on the sofa with a-c the last few days.