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  Indian J Med Microbiol
 

Figure 1: The physical realm comprising entities made of matter–energy and the nonphysical realm comprising entities not made of matter–energy together constitute the entire realm of existence. An entity that contains even a single elemental particle of physics with mass or energy in its composition is a physical entity; everything else is a nonphysical entity

Figure 1: The physical realm comprising entities made of matter–energy and the nonphysical realm comprising entities not made of matter–energy together constitute the entire realm of existence. An entity that contains even a single elemental particle of physics with mass or energy in its composition is a physical entity; everything else is a nonphysical entity