this post was submitted on 11 Feb 2025
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[–] [email protected] 16 points 20 hours ago (2 children)

the implication of einsteins mass-energy equivalence formula is mind-blowing to me. one gram of mass, if perfectly converted to energy, makes 25 GWh. that means half the powerplants in my country could be replaced with this theoretical "mass converter" going through a gram of fuel an hour. that's under 10 kilograms of fuel a year.

a coal plant goes through tons of fuel a day.

energy researchers, get on it

[–] [email protected] 1 points 1 hour ago

If mass can convert into energy that easily then we’re all in a lot of trouble…

[–] [email protected] 9 points 17 hours ago (5 children)

What do you think fusion research is?

[–] ICastFist 6 points 16 hours ago (1 children)

Just a fancier way to spin turbines with steam

[–] [email protected] 1 points 13 hours ago

Fancier or more efficient?

[–] [email protected] 2 points 13 hours ago

a fun fact: for the most efficient mass energy conversion, you need a huge spin black hole (preferably naked). Then you can get about 42% conversion. (there was a minute physics video about it i think)

[–] [email protected] 3 points 15 hours ago

15 years away from a useful result

[–] [email protected] 3 points 17 hours ago

Existing nuclear energy, too.

[–] [email protected] 1 points 14 hours ago (1 children)

No where near perfect mass conversion....

Max theoretical mass-energy conversion efficiency is under 1%

[–] [email protected] 1 points 10 hours ago (1 children)

that's still waaayyyy more efficient than coal

[–] [email protected] 1 points 9 hours ago (1 children)

That is a different level entirely.

The mass-energy conversion from chemical processes is extremely small compared to nuclear processes, you can't really compare the in any meaningful way

[–] [email protected] 1 points 1 hour ago

yes you can. coal costs ~32 cent per kWh, and uranium ~$0.0015 per kWh