Present status of nuclear physics

The frontiers of Nuclear Physics have, in recent years, expanded into new interface areas throwing up the challenge of understanding nucleons and their interactions from a fundamental point of view, and unravelling new effects, sometimes very small in magnitude, of sub-nucleonic degrees of freedom. Even in conventional Nuclear Physics, as we know over the last fifty years, new experimental facts are emerging due to a phenomenal development of experimental techniques. Some of these new detailed and precision observations call for an extension and modification of earlier theoretical concepts. This paper reviews the present status of nuclear physics, and includes the following topics: Many-body problems, QCD, Strong interactions, Quarks, mesons and Quarkonium, The Flavor Model, Gage in Variances and Momentum Transfer