Author details

Arafa H. Aly\* and Ahmed Mehaney Physics Department, Faculty of Sciences, Beni-Suef University, Egypt

\*Address all correspondence to: arafaaly@aucegypt.edu

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
