It turns out this thing’s called an “Inogon leading mark” or “Inogon light” — Inogon, not Inogen — and it’s a Swedish invention from the 1980s. But there’s still a question: why is being used to mark an undersea cable, instead of guiding people home?
(Full disclosure: there were some weird strobing effects from the light that only showed up when I got the footage into the edit, so the image you see here has been digitally stabilised so it appears the same way on screen as it does in person!)
Thanks to Andrew Stine for suggesting this!
The original Wikipedia article: https://en.wikipedia.org/wiki/Moir%C3%A9_pattern
The patent: https://patents.google.com/patent/US4629325
The US military analysis [PDF]: http://www.dtic.mil/dtic/tr/fulltext/u2/a168108.pdf
I’m at http://tomscott.com
on Twitter at http://twitter.com/tomscott
on Facebook at http://facebook.com/tomscott
and on Snapchat and Instagram as tomscottgo