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Cake day: June 20th, 2025

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  • ter_maxima@jlai.lutoAsk Science@lemmy.worldWhy do AC's not produce energy?
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    1 day ago

    Heat pumps (which are basically just air conditioners running in reverse) do “create” energy.

    By that I mean that they provide much more heating energy than the electricity they consume, because what they do is move heat that’s already there outside (but diffuse) and concentrate it in your house.

    Air conditioners cannot create energy (that is literally impossible) but they do move energy out of your home. So some models are now able to move that energy underground in the summer, where the heat doesn’t dissipate much at all, then re-use it in the winter as a heat pump to heat your home, making them both more eco-friendly and cheaper to run !






  • ter_maxima@jlai.lutoLinux@lemmy.worldWhy is sleep so hard for laptops?
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    3 days ago

    I have had no issues with sleep on macOS, so whatever they are doing we should try to copy !

    The same MacBook air, that used to last over a week with the lid closed on macOS, now needs to be charged every 3 days on Asahi NixOS.

    Linux is a much better operating system, even just for the sheer variety of software available, but power management isn’t quite there yet in my experience on this laptop.