Optical illusions

Post on 25-Jun-2015

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Transcript of Optical illusions

Optical Illusions

Black spots appear at the intersections.

The grey centre bar is the same shade everywhere! - Watch

Move your head forwards and backwards while looking at the black dot. What appears to happen?

There is a pipe in the stream of water that holds up the tap and supplies the water!

Focus on the cross in the middle – what happens?

Rabbit or duck?

Rabbit or duck?

Circle or spiral?

M.C.Escher

This is a perfect circle – honest!

The thick black lines

are parallel.

B or 13?

You guessed it. The red lines are straight.

How many legs?

Young lady or old lady?

Really truly nothing is moving

here!

Can you see the 10 in the orange circle?

What number is visible in the coloured circle? If you are

colourblind you may see no number – like the grey image.

Practical and sporty

Can you find mother and child?

A dog in the

snow

A dog in the

snow

Now can you see him?