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What about a fusion reactor, generating its own hydrogen molecules to power nuclear fusion through electrolysis from the water vapor in the air. There isn't re

What about a fusion reactor, generating its own hydrogen molecules to power nuclear fusion through electrolysis from the water vapor in the air. There isn't really a theoretical limit to how small a fusion reactor can be, although clearly this would not achievable for a long time.

ungamedplayer 3y ago
Totally planned obsolescence.
eru 3y ago
If you want to go totally crazy, you can use a black hole as a power source. The laws of physics don't give you a minimum size for them either. However for black holes the smaller they are, the more power they emit in terms of hawking radiation.
- SV_BubbleTime 3y ago
  I’m pretty sure there was a Rick and Morty close to this.
- Dylan16807 3y ago
  Fusion is silly but at least possible. Unless you have an idea for keeping the black hole inside the phone?
  - eru 3y ago
    Yes, I do: use a bunch of carefully controlled magnets to spin your block hole in a circle inside the phones. Black holes can hold charge, and thus electromagnetism works on them. (Not really useful for a phone, of course. But manipulating black holes like that is not any harder than manipulating an equally massive lump of ordinary matter.)
- thfuran 3y ago
  The power scales to such an extent that a black hole light enough to be in a phone is just an explosion.
  - eru 3y ago
    Yes. I tried to find the calculations, but couldn't find them. Google Bard to the rescue (and cutting out the actual calculations she gave): > Therefore, a black hole needs to be at least 9.49 × 10^{22} kilograms in mass to emit 100 watts of Hawking radiation. This is about the mass of the Moon. No clue whether those numbers check out. EDIT: poking bard a bit more gives this correction: > However, for a black hole to emit 100W in gamma rays, it would need to be very small, with a mass of only about 10^22 kilograms. This is much smaller than the Moon, which has a mass of about 10^25 kilograms. But poking more and more makes me less and less confident, because bard seems to believe that bigger black holes emit more than smaller black holes.

ungamedplayer 3y ago

Totally planned obsolescence.

eru 3y ago

If you want to go totally crazy, you can use a black hole as a power source. The laws of physics don't give you a minimum size for them either. However for black holes the smaller they are, the more power they emit in terms of hawking radiation.

SV_BubbleTime 3y ago
I’m pretty sure there was a Rick and Morty close to this.
Dylan16807 3y ago
Fusion is silly but at least possible. Unless you have an idea for keeping the black hole inside the phone?
- eru 3y ago
  Yes, I do: use a bunch of carefully controlled magnets to spin your block hole in a circle inside the phones. Black holes can hold charge, and thus electromagnetism works on them. (Not really useful for a phone, of course. But manipulating black holes like that is not any harder than manipulating an equally massive lump of ordinary matter.)
thfuran 3y ago
The power scales to such an extent that a black hole light enough to be in a phone is just an explosion.
- eru 3y ago
  Yes. I tried to find the calculations, but couldn't find them. Google Bard to the rescue (and cutting out the actual calculations she gave): > Therefore, a black hole needs to be at least 9.49 × 10^{22} kilograms in mass to emit 100 watts of Hawking radiation. This is about the mass of the Moon. No clue whether those numbers check out. EDIT: poking bard a bit more gives this correction: > However, for a black hole to emit 100W in gamma rays, it would need to be very small, with a mass of only about 10^22 kilograms. This is much smaller than the Moon, which has a mass of about 10^25 kilograms. But poking more and more makes me less and less confident, because bard seems to believe that bigger black holes emit more than smaller black holes.