Page 28 - (DK) How to be a GENIUS?

BRAIN GAMES

TRICKY

PICTURES

The optical illusions in this gallery all
play tricks on what your eyes and brain
think they are seeing. They stimulate
the eyes in such a way that still images
seem to move, colors change, and things
appear where they shouldn’t.

Is it straight?
The horizontal lines in this illusion appear to be wavy,
but they are all perfectly straight—use a ruler and see
for yourself! Our brains interpret the lines as being
wavy owing to the disjointed black-and-white lines
running from top to bottom, which can also make
some horizontal bands look closer than others.

Did that move?
The patterns in this picture appear to be
moving, but not if you stare at any spot for
a few seconds. This demonstrates what is
called peripheral vision drift. Our brains
perceive the colors and contrasts as moving
when we are not looking directly at them,
r
ou
but the effect ends when we train our eyes
ey
es
on one spot.

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