The initial conditions can be changed by the user, thus allowing many conditions for natural selection. Natural selection can be observed in this program. If the prey are not killed off and a relatively stable population is created, those individuals in the surviving and reproducing population generally can see farther than the predators. Those prey that can see much farther than the predators, however, are killed off as well. From time to time, a stable prey population is decimated by predators, often resulting in a new breeding pool with even more selected characteristics.
Prey only adapt under the influence of predators.
If there are few predators and those have poor vision, little change in vision occurs among the prey. If, however, predators are keen-eyed, fast, and numerous, those prey least well suited to the situation are killed very quickly. Pascal source and Delphi project. This program models the rate equations of a two level laser. The user can set the spontaneous emission and collisional relaxation rates using a dialog box.