One of the oldest discipline, physics is the description of complex nature of natural phenomena’s. It is the general analysis of nature conducted in order to understand how the universe behaves. Because of certain inter-disciplinary research areas, boundaries of Physics are not defined. It ranges from super cluster of galaxies to elementary particles quarks, neutrinos and electrons. Very short time phenomena’s beyond the limit of observations are deal by Physics. It Divulge in observable entities and phenomena’s of nature by its rules, laws as well as their effects present. It creates and measures conditions Varies between hypo and hyper widely.Experimentation explores new ideas in Physics however phenomenologist models complex phenomenon’s of experiments to theory. The scientific method of physics relies on a priori reasoning as well as a posteriori reasoning and the use of Bayesian inference to measure the validity of a given theory.