Tricking your brain...
Observe the black white spiral carefully for about 20 seconds, then fixate your view at the nebula below. What happens?
Follow us @digitalbrain!
Observe the black white spiral carefully for about 20 seconds, then fixate your view at the nebula below. What happens?
Follow us @digitalbrain!
Wow, nice trick, @digitalbrain!
Thank you @argsolver!