Optical Illusions

Can you believe your eyes? (3)

Can you believe your eyes?

Well, can you?

Square? in circle

The figure in the circles is actually square.


Are these actually squares?

Sander Parallelogram

Sander Paralelogram ~ 1926
Measure the diagonals - you'll be surprised

Life - The Fraser Illusion

Life ~ The Fraser Illusion
Are the letters really crooked?

Which way is this card facing ?

Are you looking at the inside or the outside of this card?

Woman sawn in half !!!

Look at this picture for a couple of seconds and bring your face closer to the screen.
The woman will seem to join herself back together.
Alternatively you can bring the monitor closer to your face, if you like)

Sausage Fingers

Sausage Fingers

The above picture reminded me of a childish amusement.

Hold your hands with the tips of your index fingers touching.
Bring your hands towards your eyes.
Hey presto ! Sausage fingers.

Wavy lines

Are these rows really parallel?

St Michaels Hill

Thanks to Peter Shearn for reminding me of this building at the bottom of St Michaels Hill, Bristol

Please scroll down for some more pictures of the tiles

St Michaels Hill

This really is an optical illusion, the tiles are perfectly rectangular!

St Michaels Hill

Even when damaged and dirty the illusion shows through !


How can a two dimensional image show bumps and hollows?

This page created June 5, 1999; last modified July 24, 2021