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/sci/ - Science & Math


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File: 25 KB, 300x300, sun-update-1.jpg [View same] [iqdb] [saucenao] [google]
5301104 No.5301104 [Reply] [Original]

https://www.youtube.com/watch?v=_tTjxMH26fw

10 seconds into the video.
Are they actually real? If so why the fuck don't cities already have them?

>> No.5301139

>2012, no not knowing about anime
shiggidydiggidydo

>> No.5301146

because this isnt 2025
also because we aren't in any kind of energy crisis or even close to face one.

>> No.5301149

What exactly where we looking at?

>> No.5301194
File: 45 KB, 640x480, geofront.jpg [View same] [iqdb] [saucenao] [google]
5301194

Because generally, most cities don't have a multikilometer sized underground geofront that needs illumination.

TL;DR they're light reflectors for illuminating the geofront.