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Banbladeshi Techno Knowledge

Knowledge, Idea, Invention, Programing, Coding, Technical etc.

Blog Archive

  • ► 2008 (2)
    • ► January (2)
  • ▼ 2007 (12)
    • ▼ December (12)
      • Firefox idea 1
      • Color
      • Camouflage
      • Two-keyboard Pipe Organ
      • Rotating Wheels
      • Three Streams.
      • The shade of the center dot is the same in all the...
      • Impossible triangle
      • Stairway between corners of a flat square.
      • Perpetually ascending staircase.
      • surreal
      • no software

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The shade of the center dot is the same in all the squares.

The shade of the background influences how we perceive it. All squares are uniformly shaded,
but each square seems lighter on its left edge than on its right edge.


Contrasting background

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