Prof. Kotcherlakota Rangadhama Rao (9 September 1898 – 20 June 1972) was an Indian physicist in the field of Spectroscopy. Rangadhama Rao is best known for his work on spectroscopy, his role in the development of Nuclear Quadrupole Resonance (NQR), and his long association with the physics laboratories of Andhra University. In his later years, he became known for his position as the Principal of all the colleges of Andhra University before their divisions into separate colleges, viz., AU College of Arts and Commerce, AU College of Engineering, AU College of Law, AU College of Pharmacy and AU College of Science and Technology. Rangadhama Rao was known both for his scientific ability and his interpersonal relations and volatile personality Source: Wikipedia (en)