this post was submitted on 11 Feb 2025
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Asklemmy

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[โ€“] [email protected] 2 points 1 hour ago

The label 'homo sapiens' for our species.

[โ€“] [email protected] 1 points 2 hours ago

Infinity and Black Hole

[โ€“] [email protected] -5 points 3 hours ago
[โ€“] [email protected] 4 points 3 hours ago* (last edited 3 hours ago)

When the moon is at its farthest orbit from earth, all of the planets in the solar system can fit in between earth and the moon.

[โ€“] [email protected] 6 points 5 hours ago (1 children)

That time passes differently in galaxies with different gravities. One of these galaxies is Mormon heaven.

[โ€“] [email protected] 1 points 3 hours ago (1 children)
[โ€“] [email protected] 1 points 1 hour ago

Gravitational time dilation is an effect of Einstein's General Theory of Relativity. Places with stronger gravity would then have time pass more slowly compared to earth. The opposite is also true.

[โ€“] [email protected] 7 points 6 hours ago (1 children)
[โ€“] [email protected] 5 points 5 hours ago

For the sake of discussion, let's say on the one hand a magic man intelligently designed life and all that. And on the other hand we have it arise and evolve over the course of billions of years of random atomic interactions and genetic mutations. I honestly find the second one far more amazing, wondrous, amazing, and mind blowing.

[โ€“] [email protected] 6 points 9 hours ago (2 children)

The fact that there is no discernable difference between an alive body or a dead body when it comes to chemical makeup.

All the pieces are there. All the atoms and molecules are still in the same places. Yet despite this the body is still dead.

[โ€“] [email protected] 1 points 7 minutes ago

yes, the same atoms are still there, but all the chemical processes in our body have stopped.

[โ€“] [email protected] 15 points 8 hours ago

When you say "All the atoms and molecules are still in the same places", I can't say I agree. It is the change of chemical composition that renders our body dead. Or should I say, death is defined to be such a chemical composition.

[โ€“] [email protected] 15 points 9 hours ago (1 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

[โ€“] [email protected] 8 points 7 hours ago (5 children)

What do you think fusion research is?

[โ€“] [email protected] 1 points 2 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)

[โ€“] [email protected] 2 points 3 hours ago (1 children)

No where near perfect mass conversion....

Max theoretical mass-energy conversion efficiency is under 1%

[โ€“] [email protected] 1 points 9 minutes ago

that's still waaayyyy more efficient than coal

[โ€“] [email protected] 3 points 5 hours ago

15 years away from a useful result

[โ€“] [email protected] 5 points 6 hours ago (1 children)

Just a fancier way to spin turbines with steam

[โ€“] [email protected] 1 points 2 hours ago

Fancier or more efficient?

[โ€“] [email protected] 3 points 6 hours ago

Existing nuclear energy, too.

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