صرف میں غیروں کی پیروی کے نقصانات اور عمر فاروق رضی اللہ عنہ کی تعلیمات کی روشنی میں تدارک کے جہات

Islam is a religion of Nature that covers all aspects of life and guides human being to right path amid ups and downs in one’s life. But Human intellect and comprehension have limited capacities which can understand conditions or benefits of any situation or commodity for the time being. On the other hand, teachings of the Qurʻan and Sunnah are framed in accordance with the nature of human being and since Allah Almighty is the Creator of the entire Universe including the Nature so Allah had commanded to lead life in light of the His divinely inspired principles to get real success. Concept of Halal and Haram plays central role in evolving or driving attitude of a consumer with Islamic ideology. In the prevalent worldly economic system which mainly focuses on means as to how quickly satisfy desires and demands of a consumer irrespective of concept of Halal and Haram. In this context, if a consumer finds more satisfaction in having one glass of wine than milk, the consumer in question would opt for wine and would consider him or herself as successful after having his desires met within his available resources. Moreover, this particular attitude of the same consumer would be called rational act and logical because he or she gets more satisfaction, he or she was struggling or longing for. While Islam focuses on real welfare and success of an Islamic principles-inspired consumer. The consumer with Islamic belief would prefer to get real success here and hereafter by following teachings of Islam which provide for carrying out commandments of Allah

The Effect of Kerr Nonlinearity, Doppler Broadening and Spontaneous Generated Coherence on Slow Light Propagation

The influence of Kerr non-linearity, Doppler Broadening and spontaneous generated coherence (SGC) is presented when a probe light pulse is incident on dispersive atomic medium. We consider different atom-field configura- tions, i.e., N -type electromagnetically induced transparency (EIT), Four- level Λ-type and tripod atomic systems. Initially, we consider a four-level N -type atomic medium and exploited the light pulse propagation through the medium. It is found that the Kerr non-linearity and relaxation rate of forbidden transition affect the dispersive properties of the atomic medium. A more slow group velocity of light pulse propagation is achieved via in- creasing the Kerr field. We also explored the influence of relaxation rate of forbidden decay rate on dispersive properties of the atomic medium. By increasing the atomic number density, the relaxation rate of forbidden de- cay rate increases which leads to control the slow and fast light propagation through the medium. Next, we consider a four-level Λ-type atomic medium and investigated the influence of Kerr non-linearity and Doppler broadening on the dispersive properties of the medium. It is found that the combined effect of Kerr non-linearity and Doppler broadening influence the dispersive properties of the atomic medium more sharply as compared to separate effect of Kerr non-linearity or Doppler broadening. The combined effect of Kerr non-linearity and Doppler broadening on light pulse propagation then leads to a more slow group velocity through the medium. Further, we included the SGC and Kerr non-linearity in four-level atomic system and study the light pulse propagation through the medium. A very steep dispersion is achieved via the combined effect of SGC and Kerr non-linearity. A steep dispersion then leads to more slow group velocity through the medium. Next, we ex- tended our studies to the propagation of light pulse propagation to four level tripod atomic medium via two Kerr nonlinear fields. We expect That a very slow group velocity can be achieved, which in turns leads to stop or halt the light pulse through the medium.