what is the difference between clasical physics and general physics?

Answer 1

Hi k.Ramesh

To a physicist "classical" physics means non-quantum physics. An example: quantum electrodynamics (QED) is the theory which explains how electromagnetism works at the quantum scale, on the other hand Maxwell's theory (with relativistic corrections) is the classical equivalent - it explains electromagnetism at everyday normal scales. Similarly Einstein's general relativity is a classical theory of gravity (ie non-quantum).

The "correspondence principle" requires that any quantum theory produces the appropriate classical result at non-quantum scales. So (for example) any theory of quantum gravity we discover will produce Einstein's theory in the classical limit, which then also reduces to Newton's theory in the weak field/non-relativistic limit.


Hope this helps!
The Chicken

Answer 2

classical physics follows only Newtonian mechanics n electromagnetism, it is able 2 answer many f d most common questions of physics. Modern physics involves quantum physics, einstein's theory f relativity n other subsequent theories like that of parallel universes, string theory, etc..

Answer 3

The term classical refers to older concepts. General physics is related to various discussions and modifications on laws and principles on it in the light of recent knowledge.