Same color illusion
Encyclopedia
The checker shadow illusion is an optical illusion
published by Edward H. Adelson, Professor of Vision Science
at MIT
in 1995. The image depicts a checkerboard with light and dark squares. The optical illusion is that the area of the image labelled A appears to be a darker color than the area of the image labelled B. However, they are actually exactly the same color.
This can be proven using the following methods:
Optical illusion
An optical illusion is characterized by visually perceived images that differ from objective reality. The information gathered by the eye is processed in the brain to give a perception that does not tally with a physical measurement of the stimulus source...
published by Edward H. Adelson, Professor of Vision Science
Vision science
Vision science is the science dedicated to the interdisciplinary study of visual perception and the visual system. Vision scientists study various aspects of vision from the perspectives of cognitive psychology, neuroscience, computer science, psychophysics, and ophthalmology.- See also :* Visual...
at MIT
Massachusetts Institute of Technology
The Massachusetts Institute of Technology is a private research university located in Cambridge, Massachusetts. MIT has five schools and one college, containing a total of 32 academic departments, with a strong emphasis on scientific and technological education and research.Founded in 1861 in...
in 1995. The image depicts a checkerboard with light and dark squares. The optical illusion is that the area of the image labelled A appears to be a darker color than the area of the image labelled B. However, they are actually exactly the same color.
This can be proven using the following methods:
- Opening the illusion in a image editing program and using the eyedropper tool to verify that the colors are the same
- Isolating the squares. Without the surrounding context, the effect of the illusion is dispelled.
- Using a photometerPhotometerIn its widest sense, a photometer is an instrument for measuring light intensity or optical properties of solutions or surfaces. Photometers are used to measure:*Illuminance*Irradiance*Light absorption*Scattering of light*Reflection of light*Fluorescence...
 |
 |