TIL When you open your eyes in a prefectly dark room you don't see black, but " eigengrau ", a shafe of grey en.wikipedia.org Submitted by mic3ttaa t3_zzmcr2 on December 31, 2022 at 5:23 AM in todayilearned 53 comments 282
Toad32 t1_j2dpb4j wrote on December 31, 2022 at 2:21 PM And noones hair is technically black, just dark brown. Well it sure looks black. Permalink 2
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