
Refleksionsprojekt, 1. modul, 2012, id:280  
Vejleder:  Martin Niss 
Findes på RUb:  Ja 
English abstract
This project is written as a project of reflection over physics. It seeks to clarify how simplifications and assumptions in physical models is applied and justified. This problem statement is considered based on four models of the kinetics of gases; Boyle's static and dynamic model of air respectively; Bernoulli's model of ideal gases; Maxwell's model of the viscosity of gases; and the equation of state by van der Waals. This project gives an account for each of the models, which leads to a discussion of the background for the model including established experimental results at the time of the modeling, the perception of molecules expressed in the model and how the ideal gas equation is applied in the model. This project concludes that simplifications and assumptions in models are generally justified by a reference to empirical data consistent to the model and by physical and mathematical reasoning. Furthermore, simplifications and assumptions is generally applied in the model to create a simple representation of the observed phenomena.