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MattW03@lemmy.ca to Science Memes@mander.xyzEnglish · 4 個月前

Heat

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Heat

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MattW03@lemmy.ca to Science Memes@mander.xyzEnglish · 4 個月前
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  • village604@adultswim.fan
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    4 個月前

    Is a heating element actually 100% efficient, though?

    • TheFogan@programming.dev
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      4 個月前

      Some of the energy is converted to light.

      • einfach_orangensaft@sh.itjust.works
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        4 個月前

        100% of the energy is converted to light, its just in the IR spectrum.

        Unless u feed the heater with AC power then you are also generating magnetic fields/radio waves…but those are also just photons (light) with a very long wavelengh…

        • turdas@suppo.fi
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          4 個月前

          Space heaters mostly heat by convective heating, where the heat energy is transferred from the element to the air molecules around it. This doesn’t involve infrared radiation (though in practice it is involved because any object above 0 K radiates infrared).

        • Martineski@lemmy.dbzer0.com
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          4 個月前

          You reminded me of a certain video (or videos?) on quantum fields that I watched a few months back. Truly fascinating subject.

      • DaddleDew@lemmy.world
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        4 個月前

        Which unless it goes out through a window would eventually be turned into heat anyway, right?

        • BurgerBaron@piefed.social
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          4 個月前

          Yeah it’s still thermal radiation, us being able to see it isn’t a disqualifier :p

    • InputZero@lemmy.world
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      deleted by creator

    • DaGeek247@fedia.io
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      4 個月前

      Heat pumps move heat from outside to inside, and they use less energy than the amount that is brought into the insulated area, resulting in efficiency numbers over 100%. (less energy used than the amount brought inside was used to bring the inside energy levels up)

      https://www.cnet.com/home/energy-and-utilities/a-heat-pump-is-more-than-100-efficient-yes-really-heres-how/

    • YerbaYerba@lemmy.zip
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      deleted by creator

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