Quantum physics, known also as quantum mechanics, including quantum field theory, is a relevant theory in physics that outlines the nature at the smallest scale of energy levels of atoms and particles. The term ‘quantum’ refers to the discrete units of matter and energy which are analysed by the discipline.
Before the development of quantum physics, classical physics was the only branch that was describing nature on a macroscopic scale.
Quantum physics has become important since the 1900s with the observations of Max Planck and from the explanation of the photoelectric effect by Albert Einstein in 1905. Also, Bohr with his revolutionary thinking played a relevant role in the development of this discipline.
Relevant applications of the quantum theory include quantum chemistry, superconducting magnets, quantum optics, quantum computing, light-emitting diodes and the laser.
The study of quantum physics is relevant as it illustrates the essential methodology of physics, as well as give the correct results in all the situations it is applied.
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