Three Solids

Three silo-shaped wooden boxes filled with sand hang down from the ceiling. Columns of sand fall from these boxes through grids of various shapes (triangle, square, rhomboid). As the sand falls, the same geometrical patterns are projected onto the columns by a light projector. The cross-section of falling sand and light creates 3-dimensional solids: tetrahedron, cube, octahedron — three of the five possible regular geometrical solids.
The diameter of each solid is approximately 5 cm and the contents of each box take one and a half hours to fall.


Three Solids, sand, projection, area variable, 1993