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Nature and Role of Internal Field in Amplification and conductivity of Electromagnetic Wave

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dc.contributor.author Ahmed, Almahdi Ali Alhaj
dc.contributor.author Supervisor, Mubarak DirarAbd-Alla
dc.date.accessioned 2017-01-26T12:12:06Z
dc.date.available 2017-01-26T12:12:06Z
dc.date.issued 2016-12-10
dc.identifier.citation Ahmed, Almahdi Ali Alhaj . Nature and Role of Internal Field in Amplification and conductivity of Electromagnetic Wave / Almahdi Ali Alhaj Ahmed ; Mubarak DirarAbd-Alla .- Khartoum: Sudan University of Science and Technology, college of Science, 2016 .- 100p. :ill. ;28cm .-PhD. en_US
dc.identifier.uri http://repository.sustech.edu/handle/123456789/15390
dc.description Thesis en_US
dc.description.abstract Interaction of radiation plays an important role in determining the optical properties of matter. In this work amplification of electromagnetic waves depends on the relation between the external with internal field .It is shown that amplification exists when the external and internal field are in phase. When the two field are normal to each other no amplification exists . While absorption happens when the two fields apposes each other. The internally generated electric field due to the interaction of matter with electromagnetic field is usually described by polarization. An alternative way based on the notion of internal field and current density is introduced here. The mathematical model is based on RCL circuits and effective values and complex representations. It shows that the external field induces internal field perpendicular to it ,beside two current components ,One parallel and the other is perpendicular to it .The material act as a resister and an inductor connected in series. en_US
dc.description.sponsorship Sudan University of Science and Technology en_US
dc.language.iso en en_US
dc.publisher Sudan University of Science and Technology en_US
dc.subject Physics en_US
dc.subject Electromagnetic Wave طبیعة en_US
dc.subject Internal Field en_US
dc.subject Amplification and conductivity en_US
dc.title Nature and Role of Internal Field in Amplification and conductivity of Electromagnetic Wave en_US
dc.title.alternative طبیعة ودور المجال الداخلي في التضخیم والموصلیة للموجات الكھرومغناطیسیة en_US
dc.type Thesis en_US


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