Abdus Salam scored the highest marks ever recorded for the Matriculation Examination at the University of the Punjab. He won a scholarship to Government College, University of the Punjab, and took his MA in 1946.Abdus Salam became head of the Mathematics Department of the Punjab University in 1952.The Nobel Prize in Physics 1979 was awarded jointly to Abdus Salam, Sheldon Lee Glashow, and Steven Weinberg.
Kamran, Mujahid 2013. The Inspiring Life of Abdus Salam (A biography of Abdus Salam Pakistan’s only Nobel Laureate): University of the Punjab ; 356 pages The book has four-star rating on Amazon.com
The metal-based daguerreotype process soon had some competition from the paper-based calotype negative and salt print processes invented by William Henry Fox Talbot. Subsequent innovations reduced the required camera exposure time from minutes to seconds and eventually to a small fraction of a second; introduced new photographic media which were more economical, sensitive or convenient, including roll films for casual use by amateurs; and made it possible to take pictures in natural color as well as in black-and-white.
The commercial introduction of computer-based electronic digital cameras in the 1990s soon revolutionized photography. During the first decade of the 21st century, traditional film-based photochemical methods were increasingly marginalized as the practical advantages of the new technology became widely appreciated and the image quality of moderately priced digital cameras was continually improved.