This installation is version up of "abstract symmetry ver.1".
The point to which the version has been upped is as follows.

.1) the trace of the pendulum is drawn with 3D rendering by Director 8.5.
.2) the pendulous interface was designed quite new with 2 sensors.
.3) space design was also renewed to rounded floor screen.

The virtual space is supposed under the floor. And this virtual world intersect with real world on the floor plane.
Both worlds are synchronized and are symmetry in 3 axis. There is ultimate balance between two worlds by gravity.