this post was submitted on 21 May 2026
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top 48 comments
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[–] kerrigan778@lemmy.blahaj.zone 3 points 1 hour ago* (last edited 1 hour ago) (1 children)

I actually don't know why people get so hung up on this. When you are making energy it's easiest to make heat, and boiling water through a turbine is a really efficient way to turn heat into motion and we're really good at doing it and turning motion into electricity. The fact that multiple ways of making heat exist is not surprising, the fact that different methods of making heat use the same, most efficient, well understood method for turning heat into electricity is even less surprising.

If we develop a more efficient way to turn heat into electricity it won't be "a new way to make energy" it will be "a new more efficient heat engine"

[–] thatKamGuy@sh.itjust.works 1 points 44 minutes ago

Because it feels archaic and inefficient, maybe?

We also have developed solar panels, wind turbines, hydro-electric dams as well as tidal/wave energy devices in the intervening years - so adding another method to boil water just feels “outdated”.

I’m not trying to cast judgement myself, just trying to explain that it feels like it’s just “vibes based”.

[–] samus12345@sh.itjust.works 7 points 5 hours ago

"I have an idea for a comic!"

"Is it you getting angry and sulking on the couch?"

[–] FauxPseudo@lemmy.world 22 points 8 hours ago (1 children)

Nuclear power is just steampunk with magic rocks.

[–] 4am@lemmy.zip 9 points 5 hours ago (2 children)
[–] Lost_My_Mind@lemmy.world 4 points 5 hours ago (1 children)

Too spicy for Ukraine, circa 1986.

3.6M Scoville. Not great, not terrible

[–] aeronmelon@lemmy.world 1 points 4 hours ago

So spicy they make everything around them spicy.

[–] ininewcrow@lemmy.ca 41 points 10 hours ago (5 children)

The idea .....

Send water on a 150 million kilometer pipeline to the sun to super heat it ... then pipe the steam back to power a turbine

[–] tempest@lemmy.ca 6 points 5 hours ago (1 children)

What if the pipeline already existed... But it was made of light

[–] JoShmoe@ani.social 2 points 4 hours ago

Shut up science

[–] myotheraccount@lemmy.world 1 points 3 hours ago

The pipe can double as a space elevator

[–] nightwatch_admin@lemmy.world 15 points 9 hours ago (2 children)
[–] aeronmelon@lemmy.world 2 points 4 hours ago

Dyson Straw.

[–] lime@feddit.nu 26 points 9 hours ago (1 children)
[–] Skullgrid@lemmy.world 8 points 9 hours ago (1 children)

I don't know why you made me laugh so much, thanks for that post.

I think it's because it turns the concept into something so low tech and banal

[–] lime@feddit.nu 8 points 9 hours ago (1 children)

right? like a potato gun for space

[–] BonsaiBoo@lemmy.world 6 points 9 hours ago (1 children)

You just described every rocket ever made by man.

[–] lime@feddit.nu 2 points 7 hours ago

potato guns are not typically self-propelled. i'm thinking more like HARP

[–] Clent@lemmy.dbzer0.com 4 points 9 hours ago

Wouldn't even need to run it out that far and we don't have the material science to handle temperatures near the sun.

[–] frank@sopuli.xyz 13 points 8 hours ago (2 children)

I'm an EE by schooling and I've worked in both gas turbine and wind power. Photovoltaics blow my fucking mind. Everything else is just spinning magnets to extract power. PVs are insanely cool

[–] Lost_My_Mind@lemmy.world 5 points 5 hours ago (1 children)

Your name makes me think you're about to lather your own naked body in vasoline, and hide inside the couch.

[–] frank@sopuli.xyz 2 points 5 hours ago

I'm known to lather a bit, as a treat.

[–] marcos@lemmy.world 10 points 7 hours ago (1 children)

Take a look at reverse electro-dialysis.

It's pushing thermal energy into electricity directly by the force of entropy.

[–] bitjunkie@lemmy.world 4 points 5 hours ago (1 children)
[–] marcos@lemmy.world 4 points 5 hours ago* (last edited 5 hours ago)

Entropy is maximized by turning heat into electricity, so electricity appears on the device, as it gets cooler (by a tiny amount).

EDIT: I just noticed that you may be asking about the "reverse electro-dialysis" part :)

It's a process where fresh and salty water enter a machine, and they get mixed while generating electricity. It's the reverse of this:

https://en.wikipedia.org/wiki/Electrodialysis

That runs on the same conceptual machine.

(And oh, looks like it's written together.)

[–] Proprietary_Blend@lemmy.world 15 points 10 hours ago (3 children)
[–] Klox@lemmy.world 11 points 9 hours ago (1 children)
[–] aeronmelon@lemmy.world 1 points 4 hours ago

Isn’t that was unchecked capitalism is already doing?

[–] danekrae@lemmy.world 7 points 9 hours ago (1 children)
[–] 5ibelius9insterberg@feddit.org 11 points 9 hours ago (4 children)

No, wind is spinning magnets. Everything except photovoltaics and fuel cells is spinning magnets. (Everything with boiling water is also spinning magnets)

[–] Buddahriffic@lemmy.world 3 points 7 hours ago (1 children)

There's peltier devices, too, which use heat traveling via different metals and maybe some sort of sorcery to generate a voltage.

Also teslacoils use a different mechanism (friction I believe), though that's a static voltage.

In theory, you could translate a magnet through a coil instead of just rotating it to produce a current. Lol spinning a ring magnet through a rounded coil could be a different way of using spinning magnets (assuming it isn't already done).

[–] 5ibelius9insterberg@feddit.org 2 points 6 hours ago

And wise-ass got outwiseassed. Chapeau

PS: you forgot to mention piezoelectricity

[–] bumblefumble@mander.xyz 2 points 7 hours ago (1 children)

You could always spin some wire and let the magnets stay still if you wanna be different.

[–] 5ibelius9insterberg@feddit.org 1 points 6 hours ago

Well… if a wire moves in a magnetic field, a current is induced. If a current runs through a wire, it generates an electromagnetic field.

So in this case: spinning wire = spinning magnet

[–] autriyo@feddit.org 3 points 8 hours ago

We're kinda just using magnets to push around other magnets remotely.

And then there's other stuff attached to those magnets.

[–] gnutrino@programming.dev 2 points 8 hours ago

Also primary battery cells.

[–] Skullgrid@lemmy.world 3 points 9 hours ago

It's also due to water being boiled. Just in a different, many steps removed manner.

[–] pennomi@lemmy.world 9 points 9 hours ago (1 children)

The new supercritical CO2 generators are pretty cool. Pretty much the same thing but no water!

[–] chaogomu@lemmy.world 2 points 5 hours ago

Those systems are interesting, but also nightmares to build and maintain.

Supercritical co2 is a powerful solvent and can corrode most metals.this problem is worse when you increase the temperature.

Material scientists are working on it, but so far, the few test systems that have been built can't quite live up to the hype.

[–] SubArcticTundra@lemmy.ml 4 points 8 hours ago
[–] Return_of_Chippy@lemmy.world 6 points 10 hours ago* (last edited 8 hours ago) (1 children)

Boil water and spin magnets

[–] Zwiebel@feddit.org 2 points 9 hours ago

Lorents force go wheeeee

[–] ThePyroPython@lemmy.world 4 points 9 hours ago (1 children)

Well when you invent a new way to convert rotational energy into multi-phase AC please let us all know

[–] Goodeye8@piefed.social 2 points 8 hours ago (1 children)
[–] ThePyroPython@lemmy.world 1 points 44 minutes ago

Fuck I forgot about internal combustion...

[–] Skullgrid@lemmy.world 3 points 9 hours ago

Turbine go vrrrrrr