If tracing the history of physics takes your breath away, imagine knowing its deep concepts, theories, and principles! Once you get a clear grip on the key concepts, you will see how they appear and re-appear in different situations. You will notice how different concepts come together to help you understand a phenomena. In other words, you will see a pattern to the concepts that help you appreciate the nature of physics. The most interesting part is to find similarities in basic laws underlying all these seemingly different phenomena. A comprehensive view of nature will help us in dealing with new ideas and solving problems in real life situations.
Let's take, Boltzmann's constant, for instance. A simple combination of symbols kT, where 'k' is Boltzmann's constant and ' T' is an absolute temperature finds application in study of diverse topics such as gas laws, kinetic theory, diffusion, chemical processes, noise, thermal and electrical conduction.