Daily Archives: Minggu, 17 April 2011

Colour or Greyscale?


Look closely at the dot at the centre of the first (upper) picture for approx 60 seconds. Don’t shift your focus away from it. For the best result, use a PC or laptop screen and position your eyes about 1 foot (30cm) away from the screen. After 60 seconds, move your focus to the  dot at the centre of the second (lower) greyscale picture instantly. Again, don’t shift your focus away from the dot for a while. Wait a minute! A greyscale picture? Are you sure?