Browsing by Author "Waqar Ahmed"

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    Impact of Covid-19 on Education System
    (Library Information Services, COMSATS University Islamabad, Lahore Campus, 2020) Waqar Ahmed; SP17-BBA-078
    This article is about how the education system changed because of covid-19. This article will investigate the impact of Covid-19 on education system and how virtual learning system become the need of today’s education system. We will thoroughly investigate how the virtual teaching system has changing the attitudes, behaviors, and learning ability of the students and what are the issues that are faced by the students and the teachers in the virtual learning system. We will examine the effect of that issues on education system and its impact on attitudes and cognitive abilities of the students. After thorough analysis, some suggestions would be provided through which these issues could be minimized.
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    Study of Black Body Radiation in Astrophysical Plasma Environments
    (Library Information Services, COMSATS University Islamabad, Lahore Campus, 2020) Waqar Ahmed; CIIT/SP19-RPH-026/LHR; Dr. Zahida Ehsan; LHR TP 7232
    Black body radiation in a plasma is altered due to cut off frequency which highly depends upon the plasma density. Mass energy of the photon in plasma indeed the chemical potential. As 2 2 m c h p T T       if  0 we recover the Stefan Boltzmann law from total kinetic energy equation form equation of Black body radiation in plasma, however in plasma  is different from form zero. The value of chemical potential may be now positive. Kinetic energy of the plasma body radiation exceeds the one given by the Stefan-Boltzmann law; the larger the value of, the larger this excess, which, when  is larger than unity become much, larger in vacuum. In plasmas the total all Thermodynamical parameter are altered drastically form vacuum, like total photon energy, total kinetic energy, the total number of photon, free energy, entropy and pressure, changes in all these Thermodynamical parameters are discussed here and changes are expressed