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4 votes
3 answers
4k views

Can aurorae/northern lights be used as an energy source?

Their temperature is high, they have high velocity. Can they be used as an source of energy? If not why? If yes how?
sanyam sharma's user avatar
3 votes
4 answers
430 views

Coherence effect on collecting sun light by mirrors

There are systems that collect sun light in one spot. I wonder, why does it accumulate additively, without destructive interference?
Val's user avatar
  • 1,013
3 votes
2 answers
256 views

Would it be possible to build a Solar Panel Etalon?

Since, on average, 1/3 of all sunlight that hits a solar panel is reflected, wouldn't it be possible to set up some kind of etalon system where the reflected light is then absorbed by another solar ...
John Roberts's user avatar
3 votes
1 answer
1k views

What is the largest diameter an optical fiber can have? - for nonimaging visible light transmission

Is there any theoretical limitation on the size of the diameter of an Plastic optical fiber? I would like to transmit visible sunlight through it. I see bundles of small cores available but wouldn't ...
my3ya's user avatar
  • 31
2 votes
1 answer
629 views

Solar energy and optical fiber

I'm not really good at science or physics, just wanted to ask about the idea (doesn't have an opportunity to test this). Will this scheme work and what can be its efficiency?(The goal is to make ...
ijujym's user avatar
  • 151