The Educational Review, USA

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On the Concept of Model in Physics

Michele Dragoni

Dipartimento di Fisica e Astronomia, Alma Mater Studiorum - Università di Bologna, Viale Carlo Berti Pichat 8, 40127 Bologna, Italy.

*Corresponding author: Michele Dragoni

Published: February 13,2023


The concept of model is the basis for theoretical and experimental research in physics. A model is defined as an application of physical theories to the description of a physical system. As a premise to the introduction of models, physical theories are defined as mathematical frameworks with a hypothetical-deductive structure, provided with a mapping on the real world, allowing the description of a class of phenomena. The main characteristics of theories are discussed, in particular the domain of application and the relationships between different theories. The concept of physical system is introduced as a subset of the universe that is defined thanks to the property of separability and is characterized by appropriate boundary conditions. The structure and the main characteristics of models are then discussed and the steps to be taken to construct a model are considered. The role of assumptions is underlined and different kinds of models are illustrated. Finally, four examples of simple physical models are described, that are fit to be used for didactic purpose.


Al-Khalili, J. (2012). Paradox. The Nine Greatest Enigmas in Physics. New York: Crown Publishing Group.

Bohr, N. (1913). On the constitution of atoms and molecules. Philosophical Magazine, S. 6, 26, 1-25.

Bondi, H. (1960). The Universe at Large. New York: Anchor Books Doubleday & Co.

Brewe, E. (2008). Modeling theory applied: Modeling Instruction in introductory physics. American Journal of Physics, 76, 1155-1160.

Brewe, E. & Sawtelle, V. (2018). Modelling instruction for university physics: Examining the theory in practice. European Journal of Physics, 39, 054001.

Buffler, A., Pillay, S., Lubben, F., & Fearick, R. (2008). A model-based view of physics for computational activities in the introductory physics course. American Journal of Physics, 76, 431-437.

Burchfield, J. D. (1975). Lord Kelvin and the Age of the Earth. New York: Science History Publications.

Chassy, Ph. & Jones, J. (2019). The role of mathematics in the learning of physics. Open Access Journal of Mathematical and Theoretical Physics, 2, 1.

Einstein, A. (1922). Sidelights on Relativity. London: Methuen Publishing.

Gamow, G. (1966). Thirty Years that Shook Physics. New York: Anchor Books Doubleday & Co.

Geelan, D. (2020). Physical science teacher skills in a conceptual explanation. Education Sciences, 10, 23.


Giere, R. (1988). Explaining Science: A Cognitive Approach. Chicago: University of Chicago Press.

Goldstein, H., Poole, C. P., & Safko, J. L. (2001). Classical Mechanics, 3rd ed., San Francisco: Addison Wesley.

Greenwood, H. J. (1989). On models and modeling. Canadian Mineralogist, 27, l-14.

Harrison, E. R. (1987). Darkness at Night. Cambridge, MA: Harvard University Press.

Hesse, M. B. (1970). Models and Analogies in Science. Notre Dame, IN: University of Notre Dame Press.

Hestenes, D. (1987). Toward a modeling theory of physics instruction. American Journal of Physics, 55, 440-454.

Morrison, M. & Morgan, M. S. (1999). Models as mediating instruments, in M. S. Morgan and M. Morrison (eds), Models as Mediators. Cambridge: Cambridge University Press, 10-37.

Randall, L. (2005). Warped Passages. New York: Harper Collins Publishers.

Redish, E. (2021). Using Math in Physics: 4. Toy models. The Physics Teacher, 59, 683.

Russo, L. (2004). The Forgotten Revolution. Berlin: Springer-Verlag.

Rutherford, E. (1914). The structure of the atom. Philosophical Magazine, S. 6, 27, 488-498.

Sands, D. (2021). Modeling as sensemaking: towards a theory of modelling in physics education. European Journal of Physics, 42, 064001.

Turcotte, D. L. & Schubert, G. (2014). Geodynamics, 3rd ed., New York: Cambridge University Press.

Weisberg, M. (2007). Who is a modeler? British Journal for the Philosophy of Science, 58, 207-233.

Wells, M., Hestenes, D., & Swackhamer, G. (1995). A modeling method for high school physics instruction. American Journal of Physics, 63, 606-619.

How to cite this paper

On the Concept of Model in Physics

How to cite this paper: Michele Dragoni. (2023). On the Concept of Model in PhysicsThe Educational Review, USA7(1), 107-115.