Idea: Fiber Optic Streetlights
I can think of several reasons why this would never work. And there are probably more reasons I’m not thinking of. But as a concept, I like it.
What if every streetlight had a corresponding streetlight on the other side of the planet, with fiber optics connecting them to each other? Instead of using lightbulbs, sunlight shining on one streetlight would be gathered through a lens, travel through the Earth along fiber optic cable, and come out its corresponding streetlight on the other end. Like this:
I’m sure it would be enormously expensive to set up a system like this. But imagine never having to provide electricity for a streetlight ever again. Surely it would pay for itself in the long run, right?
Of course it’s not enough to just have a corresponding streetlight on the opposite East or West hemisphere, but it would have to be on the opposite North/South hemisphere, also. Not just the “other” side of the planet, but the true “opposite” side of the planet. This would make sure that long days on one side of the planet are providing light during the long nights on the other side. But then this presents a new problem because it would require a one-to-one relationship of streetlights on opposite sides of the planet, and I’m pretty sure there’s more need for streetlights on the Northern Hemisphere than Southern Hemisphere, so that wouldn’t work out evenly.
But maybe that problem could be solved with giant “sunlight gathering centers” set up on the sunlit sides of mountains in the middle of nowhere, providing sunlight to the streetlights on the opposite side of the planet via fiber optics.
Another problem: it would be difficult to keep these things maintained, with Earthquakes and other wear and tear that would damage the fiber optic cables. And when new roads are developed, they would need new streetlights, and it’s probably tough to keep setting up fiber optic streetlights every time you build a road.
Yeah, I know. Impractical in reality. But still. I like the idea.