So would it he a Shit Light Emitting Diode then? Batman will be pleased and Wayne Enterprises has a new market.
A trick of the light evolved by silvery fish to avoid predators could help improve optical devices like LEDs, according to a study in Nature Photonics. While polarisation has many applications in photonics, non-polarising devices are also important. The research – abstract here – took a look at how fish such as sardines and …
'conceal them from predators, such as dolphin'
or if these new fish-fangled LEDs were to be used on bicycles...
'reveal then to predators, such as buses'
If any of you have ever driven (or cycled) along dark roads and come across a cyclist using powerful 'offroad lights' you'll have noticed that brighter, more efficient LEDs are sorely needed.
A happy side-effect of the dual-crystal scales is that it scatters the acoustic frequencies that dolphins use to locate prey, rendering them invisible to sonar as well (aka stealth-scales).
The world-wide collapse in sardine populations does not represent a collapse at all - they have just evolved to hide better from us, since fishing boats also use sonar to locate schools of sardines.
It also protects the silvery fish against lasers, causing a massive collapse in the population of frikken sharks with frikken lasers (when last did you see one of those, huh? Huh!?).
Maybe the shiny bits seen on Mars are actually bits of silvery fish scales that had broken off. The total lack of silvery fish reported by Curiosity is evidence of the efficacy of these scales in hiding them in plain sight (scaly bastards, those Martian silvery fish).
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