Science Projects And Inventions

Comparing shapes is one of the most amazing of all optical illusions.

It is next to impossible not to view the top of table on the left side as longer and thinner than the one kept on the right.

All you need to do to convince yourself that the two are the same size is to photocopy the picture.

Cut out the table tops. It will fit neatly over both tables in the illustration.

HOW  DOES  IT  WORK?

No one is certain why the illusion works, but scientists feel that the vertical table top appears longer than the horizontal one because its position is reinforced by the vertical orientation of the page. Our brain processes vertical arrays of visual information more easily than those that are horizontal. There are other theories that suggest that vertical sensitivity could actually be the fallout of how light-sensing cells are bunched up at the back of the eye.