linkfilter.net — Have you ever entered a movie theater on a sunny afternoon? The room probably appeared completely dark but as your visual system adjusted to the reduced level of light you were able to see better after a few moments. Over forty examples of the illusion, viewable as static images (with mouse rollover) or Flash video.
Nov 16, 2006 View in Crawl 4
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It's quiet in here... can you hear the echo?