The attractiveness of libraries:

The attractiveness of libraries is following a hyperbolic function. It shows a rapide decrease by the growing distance from the libraries, visualized by the three peaks in this model.

The attraction of the libraries is roughly proportional to the number ofthe books, visualized by the hight of the peaks. One exceedes the visualised box.
The model can be rotated, and seen under different aspects (e.g. with Netscape 2.0).