Stare at the dot in the middle of the picture and move your head towards and away from the screen.
The wheels appear to be moving.
Stare at the black dot in the center and in a few moments the grey area surrounding the dot will disappear.
Crawling Snakes.
Are the lines made out of the blue squares parallel? Yep.
Scroll the page up and down to see the picture move :
The horizontal lines are always parallel.
Turning gears, or are they :
From up-close, only one word is visible, but walk a few feet away from the screen, and then a bit more.
The letters appear fractured or whole, depending where you look :
In this, you can see grey diagonal lines that don't exist :
I must remember to return to this thread the next time I come home wasted. I wonder if everything would synch up again?
My health be damned ... this is science!