What is quantum theory, theory and examples

Quantum theory, due to its still partly mysterious nature, has great appeal to physics enthusiasts so we are going to explain clearly and synthetically what quantum physics is and what it consists of and specifically what it is. quantum theory, theory and examples.What is quantum theory, theory and examplesWhen talking about quantum theory is usually always related to quantum physics which is nothing other than the theory that describes the behavior of matter, radiation and all their interactions at the microscopic level.As established in dictionaries and encyclopedias, when speaking of quantum theory the term quantum matter or quantum physics is also mentioned and corresponds to the physical theory that describes the behavior of matter, of the radiation and reciprocal interactions, particularly with respect to the characteristic phenomena of length scale or atomic and subatomic energy. Who formulated the theory c The quantum theory, formulated by Max Planck at the beginning of the 20th century, was born from an investigation carried out on the radiation emitted by a black body. This body has the ability to absorb all the incident radiation and to radiate them in turn in a way dependent on temperature but independent of the nature of the material. Quantum theory and subsequent studies by Albert Einstein on the photoelectric effect lead to the discovery of the corpuscular nature of light. What is based on This theory is based on the quantification criterion:physical quantities such as energy cannot be exchanged continuously except through “packages” (quanta); Therefore, a system can have specific energy values, and not unlimited as stated by the laws of classical physics. With reference to the black body, he hypothesizes that the radiation emitted was not continuous but “quantized”, that is, emitted in a limited quantity of energy (quanta of energy). But what are quanta of energy? The quantum of energy is a minimum quantity below which exchanges cannot take place. Planck’s hypothesis was confirmed a few years later with Einstein’s analysis of the photoelectric effect, the phenomenon that occurs when a body exposed to light waves or electromagnetic radiation of various frequencies emits electrically charged particles. In this case, electrons are emitted from a metal surface, or even from a gas , after the absorption of the energy transported on the same surface by high-frequency radiation such as ultraviolet radiation.According to classical electromagnetic theory, the en kinetic energy of the emitted electrons depends on the intensity of the incident radiation; On the other hand, according to the experimental data, the energy of the electrons is independent of the intensity and depends on the frequency of the incident radiation. Since the nature of light, according to classical theory, was exclusively wavelike, Einstein’s theory was inexplicable and was not initially accepted. The classical theory, according to which light consisted of waves, continued to be applied in other fields with some success. However, the hypothesis of the corpuscular nature of light is confirmed 17 years later, with the discovery of the Compton effect.