Blue illusory spots appear to scintillate in white circles. (chromatic scintillating grid illusion)pic.twitter.com/HXRT5uFF4V
1:37 AM - 8 Oct 2017
0 replies
5 retweets
17 likes
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.