... science is outlined. Finally, the introduction of this thesis is concluded with a brief review of the pastdevelopments, followed by a brief outline of the organization of this thesis and its contributions ... to the best of my knowledge my original development.It constitutes the major part of this thesis. This thesis is not about questioning the theoretical origin of the Casimir effect. Instead, its ... infinitesimaldistance. In this thesis, the consideration of two hemispheres is not limited to such infinitesimal separations.The three physical arrangements being studied in this thesis are: (1) the plate-hemisphere,...