Generating electricity from universal background radition?

AI Thread Summary
The discussion explores the potential of generating electricity from universal background radiation, which maintains a temperature just above absolute zero. It highlights the challenge of converting this minuscule heat into usable energy, emphasizing the need for a cold sink to create a temperature gradient. Concerns are raised that the energy required to establish such a gradient may negate any energy gained from the process. The conversation encourages further inquiry into the physics behind this concept, suggesting that curiosity and questioning can drive innovation. Ultimately, the idea presents a clean and limitless energy source, though practical implementation faces significant hurdles.
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I'm not a physics major or anything (I'm actually a biochem major) but I was just wondering if the universal background radiation that keeps the universe (on average) a few degrees Kelvin warmer than absolute zero could possibly be enough to generate electricity. Essentially this minuscule amount of heat would have to be converted to electricity. It'd be interesting to see because it would be a safe, clean, and essentially limitless source of energy.
 
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Radiation is useless without a cold sink. The photons are not in phase.

Nobody said there is a problem with energy, but there's a problem with useful energy. If you aren't into physics, don't worry about it.
 
I'm guessing the energy required to make a cold sink to establish a temperature gradient would equal the energy gotten out of it (and that's assuming 100% efficiency)? Hm, what if whatever process used to generate electricity also lowered the temperature and did so at the rate of heat diffusion?
 
Curl said:
If you aren't into physics, don't worry about it.

I'm sure that kind of thinking is what pushes mankind forward.

Seriously, if you are interested in your idea, DO worry about it. Start reading, and asking questions. Hopefully the majority of people will be slightly more supportive.

Cheers!
Adrian
 
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