Half a croissant, on a plate, with a sign in front of it saying '50c'
h a l f b a k e r y
I never imagined it would be edible.

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Black Hairbrush Collector

Excellent target for adsorbing solar radiation
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A hair brush with bristles pointed toward the sun would make an excellent target for adsorbing solar radiation. A little research to find the best black fiber might be worth the trouble.

As the ray of energy bounces back and forth among the bristles it is sure to find a home.

Some cone collectors work on a similar scheme like a crabs eye lens for example.

If you ask how to get the energy back out again, I'll have to refer you to Dr. Von Braun as that is not my department.

popbottle, Mar 03 2017

Vantablack https://en.wikipedia.org/wiki/Vantablack
This is the stuff you want. [neutrinos_shadow, Mar 05 2017]

[link]






       This must be what hedgehogs are, in secret.
Ian Tindale, Mar 03 2017
  

       It would be interesting, if you could get a tax deduction for having your entire roof covered in hedgehogs.
popbottle, Mar 03 2017
  

       Polar bear fur is actually a fiber-optic material. It might appear to be white, and thus look reflective, but it also collects quite a bit of light that is conducted directly to the skin.
Vernon, Mar 04 2017
  

       //Polar bear fur is actually a fiber-optic material.//   

       Apparently that is a myth. It's not.
MaxwellBuchanan, Mar 04 2017
  

       Well... is it or isn't it?   

       It's a myth that it's a fibre-optic. It's not a fibre optic.
MaxwellBuchanan, Mar 04 2017
  

       //It might appear to be white, and thus look reflective, but it also collects quite a bit of light that is conducted directly to the skin.//   

       You'd think when bears hair turns white they'd retire to somewhere warmer.   

       Speaking of snow, albedo is [popbottle]'s word of tomorrow.
bigsleep, Mar 04 2017
  

       + for visual. also for Tom Lehrer reference!
bungston, Mar 04 2017
  
      
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