text: Noor Muhammad Butt (Urdu: نور محمد بٹ); b. 3 June 1936), , also known as N. M. Butt, is a Pakistani nuclear physicist and professor of physics at the Preston University who is known for his research publications in understanding the gamma-rays burst, Mössbauer effect, diffraction, later the nanotechnology.
  Besides teaching courses in topics involving the modern physics, his career has spent working in branches of physics at the national laboratory in Nilore and has authored several college textbooks in physics based on his research, and presently serving as the chairman of the Institute of Nano Science and Technology at the Preston University.