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Prannoy Mehta
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" Thus according to Maxwell, light waves are associated with changing electric and magnetic fields; changing electric field produces a time and space varying magnetic field and a changing magnetic field produces a time and space varying electric field. The changing electric and magnetic fields result in the propagation of electromagnetic waves even in vacuum" - NCERT Physics Grade XII.
What does the term time and space varying electric field/magnetic field mean ?
What does the term time and space varying electric field/magnetic field mean ?