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Re:Ask HN: What is a science fact that blew your mind when y... by raint on Thursday August 20, 2020 @02:27PM (#24226681)
The physics & biology behind eyesight.

Our eyes collect light that is "left over"(not reflected) from other surfaces.

Can't explain why but I had always had a sense that objects somehow emanated their own "image". Learning that colors manifest themselves because every other wavelength was absorbed was fascinating.

Re:Ask HN: What is a science fact that blew your mind when y... by anchpop on Thursday August 20, 2020 @03:46PM (#24227898)
Why do you say not reflected? It seems like the light that enters our eyes often has been reflected?
Re:Ask HN: What is a science fact that blew your mind when y... by pushECX on Thursday August 20, 2020 @07:09PM (#24230076)
I'm thinking the parent commenter meant to say "not absorbed"?