Formally, a model in science merely determines which (concepts or variables for) objects, relationships, and allowed operations are needed to make deductions. [En.Wikipedia]
However, in the development of science, a working hypothesis can be accepted as a science model. The researcher consistently executes a series of studies adhering to a particular working hypothesis. The preliminary nature of this hypothesis must be put to the test. Investigations should be directed towards further elaboration of the working hypothesis, but also the hypothesis itself should be testable and above all refutable. This prevents the science model from becoming an unacceptable dogma. [En.Wikipedia]
This chapter deals with the most basic science models in physics, and therefore in fact, working hypotheses.
Continue to: 1.2.1. Background of the science model CAM