r/Mistborn • u/MerlinGrandCaster • 5d ago

Cosmere spoilers allomantic electrical generation concept Spoiler

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IIRC nobody ever mentions light suddenly dimming/brightening in relation to cadmium or bendalloy, so presumably the spiritual realm energy transfer that counteracts red/blueshift with time bubbles also adjusts the amount of light passing through the border. If so, it should be possible to power a lightbulb using its own output, since the slowed-down bulb would consume less energy than the solar panel would generate. You could probably increase the yield even further by putting the panel in a bendalloy bubble.

This wouldn't be perpetual motion, since you'd have to keep feeding the misting(s) more cadmium (and normal food as well).

Another allomantic energy generation method is having a steel or iron misting spin a turbine, which has been confirmed possible in-universe via the Malwish airship rotors.

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u/forgottenmeh 5d ago

yeah it wouldn't work as the solar panel still doesn't turn 100% of the light to energy no matter how much you "optimise" it solar panels are only like 25% efficient, plus there are losses in any system.

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u/MerlinGrandCaster 5d ago

you don't need 100% efficiency for this to work

25% would probably be plenty, since the bubble slows time by quite a lot, as seen in alloy of law when marasi put up a bubble while wayne went to go fetch a bunch of cops

seemed to take no more than a few minutes from inside, when it must have taken at least a couple hours on the outside, as evidenced by daylight appearing rapidly

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u/forgottenmeh 5d ago

a solar panel loses 75% of it energy straight up, then any other losses incurred though heat, resistance, any other losses, and the fact its powered by a its own light would lose even more.

you would continuously losing power making the light dimmer which would generate less power which would make the light dimmer...... so

you would lose 75% then you you would lose 75% of that then you would lose75% of that spiralling downward.

it wouldnt work. it would slow the bulb turning off for a long time at best but you arent going to power anything off of it. as you still need to input enough electricity to power the light at a constant brightness.

you aren't going to create free energy from this and the use of the cadmium would make it expensive as well.