"Variations on Pi" is a limited edition of 50 unique light paintings created by Nils Völker. Each one of these paintings is based on a different range of consecutive decimal places of the number pi (3,14159... the mathematical constant which is the ratio of a circle's circumference to its diameter). Whilst a Machine, equipped with 16 LEDs, moves around a time exposure photo is taken from above. The digits define if and where a circle is drawn but also the colours and angles. All together 3861 decimal places were used to create the whole edition.