can u give me detail about Quantum Theory?

Question

what is quantum theory. is it very complicated theory?

Answer 1

Basically it is actually very simple. The quantum theory deals with the different states of matter and in specific the smallest portion of matter that still qualifies as such. Quanta simply means quantity. So the quantum theory studies the behavior of the least possible entity (entities) of matter.

Matter manifests in a few forms, particles, energy and waves. These forms seem to be constantly transitory. At the same time the behavior of matter on a level of particles seems incoherent with that of molecules and yet bigger chunks of matter than how we experience the behavior of matter or how Newton and Einstein made predictions about material behavior.

Answer 2

QUANTUM THEORY [quantum theory] modern physical theory concerned with the emission and absorption of energy by matter and with the motion of material particles; the quantum theory and the theory of relativity together form the theoretical basis of modern physics. Just as the theory of relativity assumes importance in the special situation where very large speeds are involved, so the quantum theory is necessary for the special situation where very small quantities are involved, i.e., on the scale of molecules , atoms , and elementary particles . Aspects of the quantum theory have provoked vigorous philosophical debates concerning, for example, the uncertainty principle and the statistical nature of all the predictions of the theory.

Answer 3

Quantum theory is a theory of physics that uses Planck's constant. In contrast to classical physics, many of the variables in a quantum theory take on discrete values. The quantum was a concept that grew out of the realisation that electromagnetic radiation came in discrete packets, called quanta. The process of converting a classical theory into a quantum theory is called quantisation and is divided into stages: first quantisation, second quantisation, etc depending on the extent to which the theory is quantised.

Quantum physics is the set of quantum theories

Answer 4

This is not for the faint hearted -

Quantum theory is a theory of physics that uses Planck's constant. In contrast to classical physics, many of the variables in a quantum theory take on discrete values. The quantum was a concept that grew out of the realisation that electromagnetic radiation came in discrete packets, called quanta. The process of converting a classical theory into a quantum theory is called quantisation and is divided into stages: first quantisation, second quantisation, etc depending on the extent to which the theory is quantised.

Answer 5

The theory is easy.

It was initially develop to explain propagation of light (how light energy travels).

Mr. Plaque(a scientist Spelling?) introduce it. As quantum theory.

He said light travels in certain Qantas(meaning in certain quantity). It means in spurts not continuous.

Hence the Quantum theory.

Some answers indicates that it is very complicated theory. This is partially true and actually true because when one tries the calculations, they find them very difficult to perform and even more difficult to understand. It is easy to get confused and or lost or both.
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In case you have any curiosity, here is some more information.

There are many theories that explains how light travels but each theory is not able to explain all the phenomenon. At least one or some phenomena of light cannot be explain yet by any one theory. In other words no theory is perfect and can be applied to explain, all phenomenon.

Actually each theory was put forward to explain, an unexplainable, phenomena.

When scientist were stumped (stuck out) they had new Batsman.

Answer 6

Quantum theory, modern physical theory concerned with the emission and absorption of energy by matter and with the motion of material particles; the quantum theory and the theory of relativity together form the theoretical basis of modern physics. Just as the theory of relativity assumes importance in the special situation where very large speeds are involved, so the quantum theory is necessary for the special situation where very small quantities are involved, i.e., on the scale of molecules, atoms, and elementary particles. Aspects of the quantum theory have provoked vigorous philosophical debates concerning, for example, the uncertainty principle and the statistical nature of all the predictions of the theory.

Relationship of Energy and Matter:-

According to the older theories of classical physics, energy is treated solely as a continuous phenomenon, while matter is assumed to occupy a very specific region of space and to move in a continuous manner. According to the quantum theory, energy is held to be emitted and absorbed in tiny, discrete amounts. An individual bundle or packet of energy, called a quantum (pl. quanta), thus behaves in some situations much like particles of matter; particles are found to exhibit certain wavelike properties when in motion and are no longer viewed as localized in a given region but rather as spread out to some degree.

For example, the light or other radiation given off or absorbed by an atom has only certain frequencies (or wavelengths), as can be seen from the line spectrum associated with the chemical element represented by that atom. The quantum theory shows that those frequencies correspond to definite energies of the light quanta, or photons, and result from the fact that the electrons of the atom can have only certain allowed energy values, or levels; when an electron changes from one allowed level to another, a quantum of energy is emitted or absorbed whose frequency is directly proportional to the energy difference between the two levels.

Dual Nature of Waves and Particles:-

The restriction of the energy levels of the electrons is explained in terms of the wavelike properties of their motions: electrons occupy only those orbits for which their associated wave is a standing wave (i.e., the circumference of the orbit is exactly equal to a whole number of wavelengths) and thus can have only those energies that correspond to such orbits. Moreover, the electrons are no longer thought of as being at a particular point in the orbit but rather as being spread out over the entire orbit. Just as the results of relativity approximate those of Newtonian physics when ordinary speeds are involved, the results of the quantum theory agree with those of classical physics when very large “quantum numbers” are involved, i.e., on the ordinary large scale of events; this agreement in the classical limit is required by the correspondence principle of Niels Bohr. The quantum theory thus proposes a dual nature for both waves and particles, one aspect predominating in some situations, the other predominating in other situations...

Answer 7

No, its not a very complicated theory. U can get the more details about it through its text book.

Answer 8

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Answer 9

quantum theory was "put away" in physics circles to my knowledge because its just something i suppose that really isnt supposed to be understood...therefore i guess it's not provable...physicists seem to be leaning in other directions besides quantum theory for some time now...

Answer 10

complicated issue. search from yahoo or google. that could help!