A stadium-shaped pencil tray cut from dark slate on a wooden desk, holding two pencils, a stick of white chalk and a small steel ball, a hand lowering a third pencil in.

14:40, the desk

Ω = {p : dist (p, [- r, r] \times {0}) \leq r} d^{'} = d - 2 (d \cdot n) n; φ_{0} = 1.100, 1.115 rad

A ball on a table with no pockets and no friction, bouncing as light does off a mirror. If the table is a circle the motion is orderly forever. Pull the circle apart and join the halves with two straight sides, however short, and it is not: Leonid Bunimovich proved in the 1970s that in this shape two shots a hair apart are soon unrelated. No corners, no obstacles, nothing rough; the chaos is in the outline alone.

Objects · Pencil tray cut from slate

Stadium Tray

CHF 95 working price

For what collects on a desk: pencils, a stick of chalk, the holder, and one steel ball to prove a point.

A pencil tray cut from the stone of blackboards, in the shape of a running track: two straights and two half-circles. It comes with one steel ball. Roll the ball, and you have one of the simplest chaotic systems there is.

A study: nothing can be ordered yet. The photograph is a generated image, not a picture of a made piece or of a real person.

Slate, cut from one piece and dressed by hand; about 1.1 kg, with felt under the base
The hollow is a stadium: two half-circles of radius 55 mm joined by straights of 110 mm, 8 mm deep and flat-bottomed, inside a wall 10 mm thick
Takes pencils at full length, the chalk and its holder; it takes chalk marks too, and wipes clean
One 20 mm steel ball in the box; a number cut underneath, and nothing printed

Stadium Tray

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