This is a PowerPoint presentation for my CIS 100 class.

1. Optical Illusions Kerry Cress CIS 100 – Spring 2011 Professor Randolph Cullum

2. Optical Illusions Defined “The perception of something objectively existing in such a way as to cause misinterpretation of its actual nature”

3. Optical illusions origination Dates back to ancient Greece Use of optical illusions in temples Slanted rooftops makes temples appear straighter Swelling columns makes temples appear proportional

4. AmbiguousIllusions Look like two or more images

5. Distorting Illusions Distort curvature, size, or length

6. Physio-logical Illusions Typically includes afterimages

7. Paradox Illusions Are created by objects but are logically impossible

8. Optical Illusions in daily life Television Picture is not really moving Picture is animated Other Technology Magazines, cell phones, computers, etc. All color we see is made up of tiny red, blue, and green dots

9. Famous Optical Illusion Popular ghost story shown on Fact or Fake: Paranormal Files TV show Cars pushed uphill over railroad tracks by kids killed in bus crash Seemed to actually be working Was debunked after figuring out road was going downhill and surroundings made it appear to be going uphill creating an optical illusion to the human eye

10. sources http://library.thinkquest.org/J0112786/illusions.htm http://www.optillusions.com http://brainden.com/visual-illusions.htm http://www.world-mysteries.com/illusions/sci_illusions2.htm http://www.wikipedia.org