Quantum Mechanics: Incomplete and Non Local Theory

We will show for undergraduate and graduate students of physics that Quantum Mechanics is an incomplete and non-local theory. The problem of non-locality is discussed by analyzing the Bell's theorem where are considered correlations between measurements results performed on physical systems that are far apart, but that interacted in the past. The experimental violations of Bell's theorem show a very general result thatquantum phenomena are nonlocal and that, inevitably, Quantum Mechanics is non-local.