Nov 1, 2019 #2 Borek Mentor 29,205 3,880 That's a classic, same happens with Moon craters that look either convex or concave on photos. And a bit similar to the hollow-face illusion.
That's a classic, same happens with Moon craters that look either convex or concave on photos. And a bit similar to the hollow-face illusion.
Nov 1, 2019 #3 256bits Gold Member 3,776 1,808 The bowls were easy. Finally, it took several seconds to get the top left tray to flip .
Nov 2, 2019 #4 davenn Science Advisor Gold Member 9,662 9,271 Borek said: That's a classic, same happens with Moon craters that look either convex or concave on photos. Yeah, I have always found that one screwy on the eyes/brain Also happens on hilly/mountains views, on, say on google earth
Borek said: That's a classic, same happens with Moon craters that look either convex or concave on photos. Yeah, I have always found that one screwy on the eyes/brain Also happens on hilly/mountains views, on, say on google earth
Feb 15, 2022 #5 Keith_McClary 722 1,440 http://illusionoftheyear.com/cat/top-10-finalists/2021/ If you hover over the "Illusions" tab, it goes back to 2005. Last edited: Feb 16, 2022
http://illusionoftheyear.com/cat/top-10-finalists/2021/ If you hover over the "Illusions" tab, it goes back to 2005.
Feb 16, 2022 #6 bland 143 37 I saw a tiny fuzzy version of this and I liked it so much I redrew it in vector and added some randomness, it's very simple but mesmerising. I tried it in different colours but monotone looks best, being vector it can be printed at any size. Enjoy. Attachments spiral square.pdf 48.7 KB · Views: 39 sample.jpg 14 KB · Views: 39
I saw a tiny fuzzy version of this and I liked it so much I redrew it in vector and added some randomness, it's very simple but mesmerising. I tried it in different colours but monotone looks best, being vector it can be printed at any size. Enjoy.
Feb 17, 2022 #7 DaveE Science Advisor Gold Member 2,927 2,596 Sorry in advance for making y'all waste so much time on this web site. Lots of optical illusions here: http://www.ritsumei.ac.jp/~akitaoka/index-e.html
Sorry in advance for making y'all waste so much time on this web site. Lots of optical illusions here: http://www.ritsumei.ac.jp/~akitaoka/index-e.html
Feb 17, 2022 #8 bland 143 37 Another one redrawn, not vector. Simple is always best. Attachments disappearing dots I.jpg 62.9 KB · Views: 35