User:Das Manoj

CAUSE OF CASIMIR EFFECT The casimir effect which can be defined simply as the interaction of a pair of neutral parallel conducting planes due to the vacuum fluctuation of the electromagnetic field. There is no classical force acting between the plates. It is purely quantum in nature. The casimir effect results from the alternation by the boundaries of the zero point electromagnetic energy. We can understand the casimir effect by the following  simple way. When we place the casimir plates in vacuum we actually change the property of the vacuum. The region within the plates is now bounded rather than free. This creates the discreteness of energy within the bounded region. The energy of the bounded region is little bit more than the energy of the same region taking the region as unbounded. The difference is called renormalized energy which caused to attract the plates together.