guppiecat: (Default)
guppiecat ([personal profile] guppiecat) wrote2018-09-24 03:05 pm

Duckweed

DSC04501


In infrared, duckweed is white* and ducks are invisible**.


* Well, the sensor interprets it as “white”. Colours, even white, are tricky when you’re talking about non-visible light.

**Not really.




Originally posted at stories.starmind.org.

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