Models and their types

An object is the thing, process or event we study. Every object has a name (a common name belongs to many objects, a proper name to just one) and properties, and each property has a value: for example, for the object “file” the property “type” may have the value “.png”. A model is a simplified copy or image of an object that keeps the features important for the study and drops the unimportant ones. When studying the real object is dangerous, expensive, too large or too small, its model is studied instead. By field of use, models are educational, experimental, game, simulation and scientific-technical; by the time factor they are static (ignore change) or dynamic (show change over time); by form of presentation they are material (globe, scale model) or information models (formula, drawing, text, program). By means of expression there are also mathematical, physical and biological models. No model shows every feature of the original, so the result is only close to reality.