Strange attractor is the name of a mathematical equation that is commonly part of chaos theory. This equation creates a fractal – a never ending, non-repeating pattern within a dynamic system. Basically, a strange attractor has a mind of its own and creates beautiful patterns in design, art, and nature. Strange Attractor Thinking Putty has a mind of its own as well. A deep, mysterious black with subtle green sparkles, it comes alive when charged with the included magnet. Each tin includes 1/5 lb of Strange Attractor Thinking Putty – a huge handful for tons of fun – a 1″ x 1″ ceramic magnet.