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` `what is the basic difference between Quantum electrodynamics and classical electrodynamics?

7 years ago

Dear Sibashis,

Classical electrodynamics deal with the study of the charges in motion and the various effects that it undergoes and their field distributions.

Whereas Quantum electrodynamics deals with the interactions of charged particles by the exchange of photons.

Quantum theory began in 1900, when Max Planck assumed that energy is quantized in order to derive a formula predicting the observed frequency dependence of the energy emitted by a black body.

Then this topic was developed to quantum mechanics to explain various phenomena such as 2D, 1D electron gases and quantum dots which have many applications.

Then it was developed to quantum field theory to explain various fields(except gravitational some ambiguities are still under research).his line of research culminated in the 1940s in the quantum electrodynamics (QED) of Richard Feynman, Freeman Dyson, Julian Schwinger, and Sin-Itiro Tomonaga, for which Feynman, Schwinger and Tomonaga received the 1965 Nobel Prize in Physics. QED, a quantum theory of electrons, positrons, and the electromagnetic field, was the first satisfactory quantum description of a physical field and of the creation and annihilation of quantum particles.

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Adapa Bharath

7 years ago

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