The Complete Number Pi Book

1

As early as in ancient times, the ancient enumerators noticed that all the wheels have something in common. Their diameter and circumference stay in the same proportion to each other and this figure is close to 3. That is the number Pi exactly and it is usually given approximately because it has more than a million of decimal places.
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Future Memory Number 4

The shadow of German artist Gerhard Mantz falls into his video installation ‘Future Memory Number 4’ during a press preview at the exhibition ‘Abstract Confusion’ at the Kunsthalle (Art Hall) in Erfurt, Germany. The exhibition traces certain abstract tendencies in visual art with 20 different artistic positions which have emerged in the last ten years. (Jens Meyer/Associated Press)