Why Do We Believe in God? An Analysis of the Motives of the Believing Behaviour in Human Beings

This article explores the motives of the human believing behaviour. The author postulates that to believe in God is natural and not to believe is a deviation from the true and pure human nature. This fact has, also, been admitted by many philosophers, psychologists and geneticists. A brief debate with reference to philosophy, anthropology, psychology and genetics has been presented to have a review the opinions of some eminent philosophers, psychologists and anthropologists about the believing behavior of the human nature. The traces of the religiosity of the primitive tribes without exception are a further evidence for the said fact. Some evidences have been presented from history and also from the examples of some living primitive tribes of Australia and Africa to accentuate the stance that to believe in God is a natural, innate, instinctual motive in the human nature. Author also quotes certain verses from the Qur’an to confirm the conformity of the historical, philosophical, psychological and genetical facts and findings with the Qur’anic stance about the believing behaviour of the human nature. The motives behind human behaviour in believing God are counted by the author as: rationality, anxiousness for God and the Life hereafter, Love of God, Affiliation with the native culture, Influence and Inspiration, Religion: A Remedy or Solution and Preaching in Terms of addresses.

Three Wave Interactions in Non- Degenerate and Degenerate Magneto-Plasmas

In this thesis we study the parametric decay instability problem (three wave interactions) in classical andquantummagneto‐plasmas.Twocombinationsofthethreewaveinteractionshavebeen investigated.First,theparametricdecayinstabilityofupperhybridwaveintolow‐frequency electromagnetic shear Alfven wave and Ordinary mode radiation has been solved in an electron‐ion plasma immersed in uniform external magnetic field. Incorporating quantum effect due to electron spin, the fluid model has been used to investigate the linear and nonlinear response of the plasma species. It is shown that the spin of electrons has considerable effect on the three‐wave coupling interactions even in classical regime. Secondly,theelectronspin‐1/2effectsontheparametricdecayinstabilityofobliqueLangmuir waveintolow‐frequencyelectromagneticshearAlfvenwaveandleft‐handedcircularlypolarized wave(LHCP)hasbeeninvestigatedinanelectron‐ionquantumplasmaimmersedinuniform external magnetic field. Incorporating the quantum effects due to electron spin, Fermi pressure and Bohmpotentialterm,thequantummagneto‐hydrodynamic(QMHD)modelhasbeenusedto investigatethelinearandnonlinearresponseoftheplasmaspeciesforthree‐wavecoupling interactionina quantummagneto‐plasmas.Nonlineardispersionrelationsandgrowthrateshave been derived analytically. It has been shown that the spin of electrons has considerable effect on the growth rate of parametric instability problem even when the external magnetic field B0 is below the quantum critical magnetic field strength BQ = 4.4138 ×1013 G. Finally,theparametricdecayinstabilityofobliqueLangmuirwaveintolow‐frequency electromagnetic shear Alfven wave and LHCP have also been investigated in high density (quantum) and low density (classical) magneto‐plasma environments. QMHD model has been used to find the linear and non‐linear response of the high density quantum magneto‐plasma, and to compare the (h → 0, Pe → Pte ) results with the low density classical plasma we have used classical limit in the results of QMHD model. Nonlinear dispersion relations and growth rates of the problem have been derived analytically. The growth rate both for quantum and classical magneto‐plasma environments has been plotted. The normalized growth rate as a function of number density in the high density degeneratemagneto‐plasmasincreasesexponentiallywhileinthelowdensityclassicalmagneto‐ plasmas it increases logarithmically.