[pranab]

In the theoretical physics or in theoretical cosmology, Brane is a multidimensional object that can exist in a higher dimensional space. Our universe is one of such a brane and so our solar system & earth .As per String theory our four dimensional universe is restricted to a brane moving in a higher dimensional space known as Bulk. The extra dimensions in the bulk may be much larger than our four dimensional space time or may be compact. As per string theory there are at least 10 dimension ( string theory Type 111) and or more up to 26 dimensions.[ There are five types of string theory and all versions include / involve additional dimensions] We the human beings who are made of billions or trillions nos of cell [ unit of life] which are at finest level made of Quarks again ] and all higher living organs can experiences only three dimensions like up-down,left-right, front- back or at best four dimension when cosidered time present- past- future. According to string theory the extra dimensions are so tiny that they are curled up and can afford at best a particle only and as such they escape our attention
If we consider a human cell it has cell wall or cell membrane and thus it can be also considered as brane the length & bradth (2D)or Length Breadth & height (3D). The humaN Beings can thus be put into three or more dimensional(?) object. What will be then position of human beings in the multi dimensional universe - as per brane cosmology?
--- A very tiny part taken from " Simmon Mitton Review article " Astrophysics and Cosmology " - The Lancet 2006 :367;1692-97
Dr. Pranab Kr Bhattacharya
Mr. Rupak Bhattacharya
Mr. Ritwik Bhattacharya
Mrs. Dahlia Mukherjee
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