Optics is the branch of physics which relates to study of properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behavior of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties. Optical science is relevant to and studied in many related disciplines including astronomy, various engineering fields, photography, and medicine (particularly ophthalmology and optometry, in which it is called physiological optics). Practical applications of optics are found in a variety of technologies and everyday objects, including mirrors, lenses, telescopes, microscopes, lasers, and fiber optics.

Dr. Sudhaker Dixit is working as an Assistant Professor in Physics in School of Management Sciences (SMS), Lucknow. He has done his Ph.D. under the supervision of Prof. Rajiv Manohar, Physics Department, University of Lucknow, Lucknow. He has also established Preeminent Research Academy and Carrier Development Center (PRACD), Lucknow.