The gif is called, “Benham’s disk" "is named after the English toymaker Charles Benham, who in 1895 sold a top painted with the pattern shown. When the disk is spun, arcs of pale color, called Fechner colors or pattern-induced flicker colors (PIFCs), are visible at different places on the disk. Not everyone sees the same colors."
"The phenomenon originates from neural activity in the retina and spatial interactions in the primary visual cortex, which plays a role in encoding low-level image features, such as edges and spatiotemporal frequency components."
Fascinating how our brains work, I see a brown tan, what do you see? :D
I see dark blue!
I see three. Brown, Green and Dark blue
i see olive green.
I see a lime green and a few lines of a light blue color here and there
"Fearless" Felix Baumgartner is the 1st human to break the speed of sound without an aircraft. In 2012, he jumped from a capsule in space, 24 miles above New Mexico. He fell for over 4 minutes at 833 mph before he could open his parachute, then landed perfectly on his feet. Source