fe.settings:getUserBoardSettings - non array given[tulpa] - Endchan Magrathea
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No. 1723 [Open] [Reply]
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thumbnail of Cetonia aurata Sunlight.jpg
thumbnail of Cetonia aurata Sunlight.jpg
Cetonia aurata... jpg
(442.99 KB, 1600x2000)
thumbnail of Cetonia aurata Right Polarizer.jpg
thumbnail of Cetonia aurata Right Polarizer.jpg
Cetonia aurata... jpg
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thumbnail of Cetonia aurata Sunlight vs. Right Polarized Light.gif
thumbnail of Cetonia aurata Sunlight vs. Right Polarized Light.gif
Cetonia aurata... gif
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 >>/1115/
> Pls post photos of the beetle with a polarizer!
Sorry that took a while. Here's a ded specimen of the common green rose chafer Cetonia aurata in sunlight and through a right circular polarizer filter. The iridescent green reflected from the beetle's carapace is a structural color and entirely left-polarized light due to the molecular structure of its chitin cuticula. Those beetles are the only objects in nature known to do this. Why - we just don't know. Most of those beetle species don't seem to react to polarized light. Only some South American beetles maybe do. 
https://pubmed.ncbi.nlm.nih.gov/16564066/
https://pubmed.ncbi.nlm.nih.gov/22155007/
https://pubmed.ncbi.nlm.nih.gov/20302426/