This project idea comes to you from Folie Technique in Montreal, Quebec. |
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The iris controls the quantity of light entering the eye. The lens focuses the light. Each retina is composed of 7 million cone cells that detect colours and 12 million rod cells that detect black and white shapes as well as movement. The eye forms a reversed image on the retina. Right at the beginning of your development as a baby, your brain learned to turn the reversed image right-side up and to interpret it.
Your perception of the world is a translation, a transposition under another form of reality; it is not loyal to reality because your brain adds to, removes from, reorganizes, and interprets the sensory clues it receives. And your senses can trick you. This is what we call an optical illusion.
EX 1. Stretch your arm out and stare at one of your fingers while you alternately close each of your eyes. Your finger will seem to move more with one eye closed; this is your dominant eye. Scientists who use telescopes or microscopes prefer to use their dominant eye.
EX 2. If you draw a line, you see a line and not a quantity of lined-up points.
According to the placement of the dots, you see rows or columns, but each figure contains the same number of points and has a comparable surface.
You see rows or columns according to whether the black dots are placed in rows or in columns.
Three zones are delimited according to the same principle.
On the left, you see white columns while on the right, you see black columns. And yet they are the same pattern only with the colours reversed.
You see a circle covered by an X rather than pieces of pie with the separating lines going beyond the pie.
According to the rule of closure, you see squares instead of the columns which the proximity of the lines suggests. You also complete the square delimited by the black dots even though it doesn't exist. Same for the triangle.
A hunter walking with his dog behind a fence.
Person squatting, washing the floor, with a bucket on the left. The letter B or the number 13.
A cup or the hips of a child.
An old woman with a hood in black or the profile of Scrooge with a long nose in white. You also see a cup or two figures facing each other.
You perceive the rhombus as a square when it is placed on the cube.
You see the pyramid differently depending on the angle.
Notice the brightness near the black spots.
Continue to more optical illusions.
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