Prof. Dr. Mahmoud Ahmed El-Sherbini (1909 - 1998). He was born in Menia Al Kamh, Sharqia, January 22nd 1909 and died June 11th 1998. Professor El-Sherbini is considered one of the pioneers of physics in Egypt. In 1926, he joined the one year old Faculty of Science of the Egyptian University and was awarded the B. Sc. degree with honor, in Physics and Mathematics in 1930. His M. Sc. degree (1932), entitled "Third Order Terms in The Theory of Stark Effect and Three Dimensional Periodic Orbits in The Field of Non-Neutral Atoms" was supervised by Professor Ali Moustafa Mosharafa. He joined King's College in London (1932) to work on his Ph. D. thesis under the supervision of the Nobel Laureate, Sir O. W. Richardson, on "Electron Reflection in The Low Energy Region".