13:["$","div",null,{"lang":"en","dir":"$undefined","children":[[["$","div","be2ddca6-6482-4256-864e-f0b96efa6777",{"id":"812aea852f9c8a9d0bdf12e4aa46dd8c","className":"block block-subchapter","data-tier":"study","data-type":"subchapter","data-key":"812aea852f9c8a9d0bdf12e4aa46dd8c","lang":"$undefined","children":[null,null,null]}],["$","div","2ec75655-20ad-4c96-b9fb-76a4c2149a53",{"id":"8c34da5fb81fe5f1449be5cc650cad4f","className":"block block-subchapter","data-tier":"study","data-type":"subchapter","data-key":"8c34da5fb81fe5f1449be5cc650cad4f","lang":"$undefined","children":[null,null,["$","div",null,{"className":"block-body","dangerouslySetInnerHTML":{"__html":"

Understand about physiology of perception and the four dimensional world of space time

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Assessment

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What happens when there is a perception of physical reality?
What are three dimensions of space?
Which is the fourth dimension of space?
When we can understand the four dimensional world?
What is called as virtual reality?

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