Bilbao Guggenheim, holographic exhibit
summer glow stick rainbow party
Made from felt by secondary school children.
Rainbow installations.done with sewing thread.
Bismuth is a brittle metal with a white, silver-pink hue, often occurring in its native form with an iridescent oxide tarnish showing many colors from yellow to blue. The spiral stair stepped structure of a bismuth crystal is the result of a higher growth rate around the outside edges than on the inside edges.
endangered Rainbow Seahorse.