Q/ If E is a macroscopic field inside the dielectric , and consider an atom at...

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Physics

Q/ If E is a macroscopic field inside the dielectric , andconsider an atom at position R , Draw a sphere of radius ℓ (Lorentz sphere) about R. suppose( l » a interatomic spacing ). Thecontribution to the microscope field at R from induced dipoles onother atoms can be divided in two parts ;

  1. For atoms inside sphere
  2. For atoms outside sphere

For the two cases prove that the localfield at center of sphere is :

ELF = E0– 4/3πP +4/3 πP +0

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