PPT Slide Slide 2 of 2 Physics is based on the faith that the explanation of the phenomena in nature which we observe are describable in terms of axioms or postulates that are mathematical. We say that the operations are explained when we find mathematical expressions relating them.
Mathematical methods provide the best techniques to order and comprehend nature.
By this we mean equations relating observables that are measurable. But one should never lose contact with the observables completely. In general we do not try to explain the ultimate reason why something takes place . As Galileo and Newton taught us, we in general try to describe how something works. Then we say that we have understood the phenomenon.