Introductory concepts of atomic and nuclear physics. Radioactivity (natural, artificial, exotic). Nuclear fission. Nuclear fusion. Nuclear radiation (alpha, beta, gamma). Non-Nuclear radiations (delta, Bremsstrahlung, Cerenkov, Roentgen, Laser, microwaves). Cosmic radiation. Nuclear radiation detectors. Radio timings. Physical applications of ionising radiation. Applications of Radioisotopes: (i) in geology, (ii) medicine, (iii) industry, (iv) agriculture. Nuclear Energy (Nuclear Reactors, Nuclear Accidents, Nuclear Weapons and Nuclear Testing). Principles of radioprotection. Radioisotope production methods. The course also includes laboratory exercises.