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Mrs. Gorham's Optical Illusions

Optical Illusion Prezi
by

michele scoville

on 10 November 2015

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Transcript of Mrs. Gorham's Optical Illusions

Optical Illusions
What are they?
Images that
trick your eyes
How?
afterimages effect the eyes or brain by using
brightness, tilt, color or movement
http://nadav.harel.org.il/Bridget_Riley/
http://dragon.uml.edu/psych/illusion.html
http://www.uic.edu/com/eye/LearningAboutVision/EyeSite/OpticalIllustions/3Guys.shtml
cognitive illusions lead to false perceptions.
(Brain) (images) (fake) (ideas)
Examples are:
ambiguous pictures(Two pictures in one)
depth/motion/color perception
impossible objects
anamorphosis
Who?
MC Escher
Creates tessellations and illusions
Bridget Riley
Julian Beever
Sidewalk Chalk Street Artist
Op Artist
Our Op Art Projects
What is looks like if you look at it the wrong way!
Those are real people! Everything else is a chalk drawing!
Did you see the grey dots between the squares? That's your eyes playing tricks on you!
Julian Beever is a well know street artist who uses anamorphosis to create the illusion of three dimensions. When viewed from the preferred angle, Beever’s sidewalk drawings have height and depth that astonishes the viewer. However, by simply walking around these sidewalk drawings, the illusion is lost.
Face or Vase?
Op Art Hands or Object
What do you see?
What do you see?
From the correct viewpoint
From the side
More on the artists!
Op Art Hand How To
Full transcript