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[–] 52 points 1 year ago (8 children)

You need a radiator, otherwise the glass of water will eventually be the same temp as the phone.

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  • [–] 12 points 1 year ago (2 children)

    not quite, the glass of water itself acts as a radiator since it has a significantly larger surface area than the phone, and water evaporation cools it down ever so slightly

    even at equilibrium it'll probably keep the phone a degree or two colder, i'd wager.

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