Selection of the most astonishing Optical
Illusions. You will not believe your eyes, even if you understand what
you see.
Coin Distances
Two distances are associated with three coins. Could you find a certain
position of the coins so that the distances are equal? Is there any way
how the moving coins can distract you from the mission?
Only one of the nine arrows points exactly into the center of the circle,
all of the remaining are only close to it. Can you guess without any
additional measures which one is it?
See how several bows inside a circle make you stuck in the illusion about
where the true center of this circle is. Can you get out of it with the
help of your eyes only?
Sometimes a perspective brought into a picture may bring there a kind of
illusion as well. Make sure the picture will not mislead you while finding
out the truth.
Make some simple device be turning and try to guess what image it will
produce. It seems your imagination will be required instead of your math
skills.