This is what happens when you begin with Lissajous Curves and velocity is allowed to vary randomly.
A German artist named Daniel Becker has created a beautiful series of images based on random phenomena inherent in math. One image, for example, visualizes the unpredictable distribution of prime numbers, while another creates a trippy fractal-looking thing from the meandering digits of pi (pictured). In one particularly fascinating image, Becker plots 30,000 results from pseudo-random number generators in three-dimensional space to show the hidden patterns that emerge.
See them all at Random Walk.
There are some really awesome things on his site!!!!
Wall in New York to be built by a Robot!
"Swiss architects Gramazio & Kohler at ETH Zurich have developed an industrial robot that can build walls. The robot called R-O-B is mounted on a flatbed trailer to allow it to move along the construction path. The brick wall will be constructed on Pike Street in New York, in full view of the public. Construction will begin on September 29th and is expected to take four weeks."