Variations on Pi by Nils Voelker

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A post from Design Milk by Jaime has the whole story. Here is a part:

Variations on Pi by Nils Voelker
Nils Voelker has created a series of light paintings called Variations on Pi. It’s an edition of 50 unique long exposure photographs of which each is based on a different range of consecutive decimal places of Pi.
A machine, equipped with 16 LEDs, moves around as a photo is taken from above. The digits define if and where a circle is drawn but also the colors and angles. Together, 3861 decimal places were used to create the whole edition.

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