Soldato
- Joined
- 2 Nov 2004
- Posts
- 24,654

If your eyes follow the movement of the rotating pink dot, the dots will
remain only one color, pink.
However if you stare at the black "+" in the center,
the moving dot turns to green.
Now, concentrate on the black "+" in the center of the picture.
After a short period, all the pink dots will slowly disappear, and you
will only see only a single green dot rotating.