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  2. Impossible color - Wikipedia

    en.wikipedia.org/wiki/Impossible_color

    Opponent process color theories, which treat intensity and chroma as separate visual signals, provide a biophysical explanation of these chimerical colors. [7] For example, staring at a saturated primary-color field and then looking at a white object results in an opposing shift in hue, causing an afterimage of the complementary color ...

  3. Fechner color - Wikipedia

    en.wikipedia.org/wiki/Fechner_color

    The Fechner color effect is an illusion of color seen when looking at certain rapidly changing or moving black-and-white patterns. They are also called pattern induced flicker colors ( PIFCs ). A sample of a Benham's top ( animated version )

  4. List of optical illusions - Wikipedia

    en.wikipedia.org/wiki/List_of_optical_illusions

    The Hering illusion (1861): When two straight and parallel lines are presented in front of radial background (like the spokes of a bicycle), the lines appear as if they were bowed outwards. Hollow-Face illusion: The Hollow-Face illusion is an optical illusion in which the perception of a concave mask of a face appears as a normal convex face.

  5. Optical illusion can tell if you need glasses - AOL

    www.aol.com/news/2015-05-14-optical-illusion-can...

    Back in 2007, scientists at MIT developed an optical illusion to determine if you need corrective lenses. It does the same thing as the trusty big 'E' -- but way more fun. It does the same thing ...

  6. Chromostereopsis - Wikipedia

    en.wikipedia.org/wiki/Chromostereopsis

    Chromostereopsis is a visual illusion whereby the impression of depth is conveyed in two-dimensional color images, usually of red–blue or red–green colors, but can also be perceived with red–grey or blue–grey images. [1] [2] Such illusions have been reported for over a century and have generally been attributed to some form of chromatic ...

  7. Checker shadow illusion - Wikipedia

    en.wikipedia.org/wiki/Checker_shadow_illusion

    An illusion closely related to the checker shadow illusion, which also relies on using implied visual shadows to seemingly darken a brighter region to the same color as a well-lit dark region, involves two squares placed at an angle, with the darker square being lit and the lighter square at an angle which receives poor light. [2]

  8. 50 Shades Of Not-Just-Grey: This Color Test Will Tell You If ...

    www.aol.com/lifestyle/test-eyesight-colorful...

    What a colorful trivia quiz is right in front of you! Today we’re looking at 20 images with colorful squares, stripes and bubbles. Your main task for this trivia is going to be recognizing the ...

  9. Bezold effect - Wikipedia

    en.wikipedia.org/wiki/Bezold_effect

    Demonstration of the Bezold effect. The red seems lighter combined with the white, and darker combined with the black. The Bezold effect is an optical illusion, named after a German professor of meteorology Wilhelm von Bezold (1837–1907), who discovered that a color may appear different depending on its relation to adjacent colors.