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  2. McCollough effect - Wikipedia

    en.wikipedia.org/wiki/McCollough_effect

    A related version of the McCollough effect also occurs with a single color and orientation. For example, induction with only a red horizontal grating makes a black-and-white horizontal test grating appear greenish whereas a black-and-white vertical test grating appears colorless (although there is some argument about that).

  3. Café wall illusion - Wikipedia

    en.wikipedia.org/wiki/Café_wall_illusion

    An interactive version of the Café wall illusion that allows for adjusting the offset and turning the black boxes into white boxes; An animated proof that the horizontal lines are parallel and straight; The original café in Bristol on Google Maps Street View

  4. List of optical illusions - Wikipedia

    en.wikipedia.org/wiki/List_of_optical_illusions

    The Vertical-horizontal illusion is the tendency for observers to overestimate the length of a vertical line relative to a horizontal line of the same length. Vista paradox: Visual tilt effects: Wagon-wheel effect: White's illusion: Wundt illusion: The two red vertical lines are both straight, but they may look as if they are bowed inwards to ...

  5. A horizontal tricolour of blue, green with black-edged white lines, and yellow, with a green triangle based on the hoist-side, bearing a stylized outline of the Fortaleza de São José de Macapá in black and white. The green triangle continues as a horizontal stripe to the fly end. See Flag of Amapá: Amazonas: 1982

  6. Elements of art - Wikipedia

    en.wikipedia.org/wiki/Elements_of_art

    There are different types of lines artists may use, including, actual, implied, vertical, horizontal, diagonal and contour lines, which all have different functions. [3] Lines are also situational elements, requiring the viewer to have knowledge of the physical world in order to understand their flexibility, rigidity, synthetic nature, or life. [1]

  7. Road surface marking - Wikipedia

    en.wikipedia.org/wiki/Road_surface_marking

    A broken white line in the direction of travel, where the gaps are longer than the painted lines, indicates the center of the road and that there are no hazards specific to the design and layout of the road, i.e. no turnings, sharp bends ahead etc. A broken white line in which the gaps are shorter than the painted lines indicates an upcoming ...

  8. Switch your Inbox style in AOL Mail

    help.aol.com/articles/switch-your-inbox-style-in...

    1. Click the Settings icon | select More Settings. 2. Click Viewing email. 3. Under Inbox style, select Unified Inbox or use New/Old Mail. 4. Click Back to Inbox or Back to New Mail when done.

  9. Triband (flag) - Wikipedia

    en.wikipedia.org/wiki/Triband_(flag)

    The flag of Germany (black-red-gold) originates from the uniform colours of the Lützow Free Corps during the Napoleonic Wars, which contained volunteers from many German states and became famous through propaganda. Prominent veterans and later students became the core of the republican movement of early 1800s which adopted the colours.