this post was submitted on 30 Apr 2026
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Science Memes

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[–] AnnaFrankfurter@lemmy.ml 6 points 6 hours ago

What about heat pumps they have efficiency in the range of 200-300%

[–] JATtho@lemmy.world 10 points 10 hours ago* (last edited 8 hours ago) (4 children)

Power-line losses before your house, so a electric heater is only 96%-85% effecient. When the heating for bird feets is accounted, it's 100%.

[–] StumblingWasabi@lemmy.today 2 points 2 hours ago

Well it is heat. If we count power lines as part of an electric heater I'd say that's still effective.

[–] EvilHankVenture@lemmy.world 9 points 8 hours ago

Blaming the heater for losses in the power lines doesn't seem fair.

[–] Ajen@sh.itjust.works 4 points 9 hours ago

You're assuming this heater is on grid power. We just need to power it by solar panels that are inside the house, under a skylight. Now we've got a 100% efficient heater, just don't ask about PV efficiency...

[–] GreenKnight23@lemmy.world 1 points 8 hours ago (1 children)

what if you're running it directly from a generator?

[–] JATtho@lemmy.world 3 points 8 hours ago (1 children)

If the generator is inside the house, 100%. But then you could just burn the fuel...

[–] GreenKnight23@lemmy.world 3 points 8 hours ago

you could just burn the fuel...

1000003471

[–] spicehoarder@lemmy.zip 20 points 13 hours ago

The entropy machine has a 100% efficiency

[–] Tiger_Man_@szmer.info 16 points 13 hours ago

induction losses:

[–] edinbruh@feddit.it 38 points 16 hours ago (2 children)

Isn't some energy still dissipated as light instead of heat?

[–] Noved@lemmy.ca 27 points 15 hours ago (3 children)

Which travels to a location, hits it and is eventually converted to heat.

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[–] piccolo@sh.itjust.works 8 points 15 hours ago

When light is absorbed by surface, the material temperature increases and remits light at a longer wave, ussually in the IR spectrum. So its safe to say all light is heat enegry.

[–] BlackLaZoR@lemmy.world 1 points 8 hours ago

What about electro-magnetic losses?

[–] Zerush@lemmy.ml 64 points 20 hours ago (7 children)

Also a question of optimizing its use

vgy.me

[–] MashedTech@lemmy.world 12 points 19 hours ago (1 children)

100% efficient!!! You're using all the energy to do meaningful work!

[–] Zerush@lemmy.ml 3 points 1 hour ago

Setup sponsored by Cyberpunk 2077: Ultimate Edition, to have a real toasting effect.

[–] sp3ctr4l@lemmy.dbzer0.com 10 points 18 hours ago* (last edited 18 hours ago) (6 children)

A completely valid pannini press, imo.

Like this is literally the 'modern problems require modern solutions' meme.

I've used older PC battlestations of mine as 'bonus' spaceheaters more than once, lol, sorta like those 'pocket warmer' apps for phones that would just run some absurd computation that would redline the cpu, hahah!

[–] Sylvartas@lemmy.dbzer0.com 6 points 17 hours ago (2 children)

I have a little "tradition" of doing a playthrough of very hardware-demanding stuff in winter. Tarkov is one of my favs for this since it's unoptimized as hell and the post soviet aesthetics really fit the season

I waited until winter to rip my DVD collection because it meant hours of high throttle on the PC.

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[–] NikkiDimes@lemmy.world 5 points 16 hours ago

I had some frozen imitation crab legs that I wanted to eat, but didn't want to microwave proper. I put them on top of my PC's GPU radiator and ran a stress test while watching stuff so it would thaw faster without overheating.

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[–] mere@lemmy.blahaj.zone 2 points 13 hours ago (2 children)

noo get the oily greasy food away from technology 😭

[–] MashedTech@lemmy.world 1 points 24 minutes ago

What are you, afraid of fire? This is progress. Cavemen were bold and progressed.

[–] WoodScientist@lemmy.world 6 points 11 hours ago* (last edited 10 hours ago) (1 children)

The resulting grease fire will increase the electrical power->heat conversion calculation to over 100%!

[–] Aussiemandeus@aussie.zone 1 points 10 hours ago

We need you to get on the Haron collider asap

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[–] cass27@lemmy.zip 31 points 18 hours ago (1 children)

Noise would be a small but non-zero form of heat loss that shouldn't contribute to temperature increase

[–] dz2@sopuli.xyz 20 points 18 hours ago

Noise would turn in to heat as it’s absorbed, so it’s just heat with extra steps. Same deal with lights

[–] pruwybn@discuss.tchncs.de 79 points 1 day ago (2 children)

Every electric device is a heater. Some just do other things too.

[–] kkj@lemmy.dbzer0.com 54 points 1 day ago (13 children)

A brushless motor only converts ~5% of its input to heat. That's low enough that you can reasonably call it a side effect.

Now, a computer, that's a heater that happens to produce math as a side effect. 100% of its input ends up as heat.

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