Beschreibung
Autorenporträt
Dr.Amira Mohamed Hasanein ShakraThe author was born in Egypt on 19/8/1977.She graduated from physics department,Faculty of Education,Ain Shams university in 1999,she has got her M.Sc(Physics)2004 and Phd(Physics)2009.Scientific careers.Assistant lecture 2004 and Physics lecture2009 at Physics department,Faculty of Education,Ain Shams University.