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what is quantum physics and its limitation.?

when newton’s law of motion can not work for quantum theory and newtons proof for light was wrong instead of wave he said particle.

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  1. Quantum mechanics is a fundamental branch of theoretical physics that replaces classical mechanics and classical electromagnetism at the atomic and subatomic levels. It is the underlying mathematical framework of many fields of physics and chemistry, including condensed matter physics, atomic physics, molecular physics, computational chemistry, quantum chemistry, particle physics, and nuclear physics. Along with general relativity, quantum mechanics is one of the pillars of modern physics.

  2. The discovery that waves could be measured in particle-like small packets of energy called quanta led to the branch of physics that deals with atomic and subatomic systems which we today call Quantum Mechanics.
    Quantum mechanics is a more fundamental theory than Newtonian mechanics and classical electromagnetism, in the sense that it provides accurate and precise descriptions for many phenomena that these “classical” theories simply cannot explain on the atomic and subatomic level.
    http://en.wikipedia.org/wiki/Quantum_physics

  3. Quantum mechanics is a fundamental branch of theoretical physics that replaces classical mechanics and classical electromagnetism at the atomic and subatomic levels. It is the underlying mathematical framework of many fields of physics and chemistry, including condensed matter physics, atomic physics, molecular physics, computational chemistry, quantum chemistry, particle physics, and nuclear physics. Along with general relativity, quantum mechanics is one of the pillars of modern physics.

  4. Quantum physics describes the behaviors of of objects at the sub-atomic scale, which include things like photons, electrons, protons, quarks, etc.
    It’s limitation is that it does NOT describe behaviors attributed to gravity at the sub-atomic scale. Therefore we know for a fact that our current quantum theory is INCOMPLETE. Our current theory of gravity is Einstein’s theory of General Relativity, but it is only able to describe large scale objects like planets, stars and galaxies. It can NOT describe behavior of extremely small dense objects with intense gravity like “black holes”.
    Therefore, most physicist today are looking for a theory to replace our current quantum theory and general relativity. The top contender is called Superstring Theory.

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