No Stupid Questions

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Does blowing on our hot food before we put it into our mouths actually make a difference to how hot it is? (self.nostupidquestions)

submitted 7 months ago by Oneeightnine to c/nostupidquestions@lemmy.ca

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I'm thinking that no, it doesn't. Which begs the question of why we do it? Is it a psychological thing?

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[–] orthen@feddit.de 43 points 7 months ago (1 children)

Yes, it does. By blowing over it, you evaporate some of its water, which cools it down. See also https://en.wikipedia.org/wiki/Enthalpy_of_vaporization

[–] Oneeightnine 7 points 7 months ago (1 children)

Thank you.

I think I saw a show 20 or so years ago that tried to debunk this and obviously either they messed up, or I wasn't paying attention.

(The show was called Brainiac).