While using the method of orthogonal intersections, I came across a line of research into new sculptures in which physical realty almost automatically produces new hitherto unexplored forms.
This is the exact logical course that leads to the birth of this latest generation of sculptures.
Today everyone knows how an electrocardiogram works - a pen moves rapidly up and down over a piece of paper in a horizontal direction. But the tracing represent the combination of two simultaneous movements that are perpendicular to each other. If these two movements are replaced by two harmonic motions (regular oscillations as in a pendulum), very strange, regular figures appear on the paper. The formation of one figure rather than another depends on the characteristics of the two harmonic motions and the moment at which each starts with respect to the other.
Considering the enormous potential of the orthogonal intersection method, I could not fail to realise the incredible opportunity of intersecting in space lines which in turn are generated on a plane by the orthogonal intersection of two harmonic motions.
In my opinion, the results of this clear-cut operation are full of allure.
Guido Moretti

You can download a short video showing this oscillatory movement. Both files are needed to run the program. Save them in the same (any) folder. After downloading the files, open the folder containing them and click on pendolo.exe.

download pendolo.exe ( 70,2 Kb)
download Egavga.bgi ( 5,42 Kb)