DR. XAVIER JESU RAJA M.SC., M.PHIL., PH.D. was a former Reader and Head of Post Graduate and Research Department of Physics Loyola College, Chennai. He served Loyola College for 29 years (1978 - 2007). His Main area of interest is in Mathematical physics, Advanced Quantum Mechanics, Nuclear Physics and Reactor Physics. He was also a honourable member of Tamilnadu Public Service Commission (TNPSC) for 6 years (2007 -2013). He was highly instrumental as in conducting classes in 31 centres for TN Board X, XI, XII Exams in more than 100 schools in Tamil Nadu, where centers also provided coaching for BE/MBBS entrance exam. He has been successfully imparting the training with his team procuring high results.