answersLogoWhite

0


Best Answer

It is a branch of physics dealing with physical phenomena at microscopic scales. Quantum mechanics departs from classical mechanics primarily at the quantum realm of atomic and subatomic length scales.

Hope this Helps:)

It did! thank you where ever you might be! ~LionBeats

User Avatar

Wiki User

8y ago
This answer is:
User Avatar
More answers
User Avatar

Wiki User

13y ago

A system of mechanics that was developed from quantum theory and is used to explain the properties of atoms and molecules. Using the energy quantum as a starting point it incorporates Heisenberg's uncertainty principle and the de Broglie wavelength to establish the wave-particle duality on which Schrödinger's equation is based. This form of quantum mechanics is called wave mechanics. An alternative but equivalent formalism, matrix mechanics, is based on mathematical operators.

This answer is:
User Avatar

User Avatar

Wiki User

10y ago

There are two mathematical approaches to quantum mechanics:

  1. Heisenberg's matrix arithmetic, now used in a form called bra-ket notation.
  2. Schrodinger's differential equations.

In 1926 Schrodinger proved that they are mathematically equivalent.

This answer is:
User Avatar

User Avatar

Wiki User

12y ago

I'm not sure there is one, "The," fundamental assumption of quantum mechanics, but a basic assumption is that our Universe, at the sub-atomic level, operates at a probabilistic manner. In other words, we can no longer say, "This event will happen," we can only speak of the PROBABILITY that an event will happen.

I need to emphasize that QM assumes (and experimental evidence has shown) that it is NOT the case that we lack the instruments to determine anything more than probabilities, nor is it the case that QM particles "know" what will happen while we do not. It is that, in our Universe at the sub-atomic level, events are inherently probabilistic.

This answer is:
User Avatar

User Avatar

Wiki User

11y ago

I have no idea what you mean by "the basic structure of quantum mechanics".

Interpreting it in the most reasonable way I can, I guess I'd say "mathematics."

The fundamental basis of QM is the subject of regular conferences. The ruling paradigm is the Niels Bohr/Heisenberg 'Copenhagen interpretation'. Some years ago Max Tegmark found much disagreement.

A 2011 conference (Austria) than also ran a poll. The most popular was still 'Copenhagen' but with less that 30% of the votes. 28% thought Einstein was wrong, and the rest were split between 5 other possible bases. i.e. there is now even less agreement and even more confusion (QM is also still not compatible with Relativity).

The real solution is that wavelength changes on interaction with the quantum particles of a moving detector (lens) medium, to travel at the local c/n. (n=refractive index, locl means the state of motion of the observer). This understanding (DFM) is likely to replace the others over the next 20 years, which is quite fast in cosmic terms.

This answer is:
User Avatar

User Avatar

Wiki User

10y ago

Quantum physics studies that realm of our Universe where quantum effects predominate. This is (basically) at the sub-atomic level, and it's here where the phyics laws we are used to, simply don't apply. For example:

1) We have to give up the notion that an object -- such as an electron -- has an exact postion and momentum. Instead, we can only discuss the probability of an object being within a certain space at a certain time, or having a certain momentum. And it is NOT the case where we humans lack the ability to determine position or momentum -- the REALITY is that, in quantum physics, these quantities are fundamentally unknowable.

2) In addition, any attempt to more precisely measure one aspect of a quantum particle -- say, its position -- automatically makes another aspect more unknowable. In this case, the momentum becomes more imprecise. Again, this isn't because we human aren't clever enough to do these measurements simultaneously, this is a fundamental fact of our Universe.

3) Certain aspects of an object come in discrete chunks, such that the object can have one of quantity, or two of a quantity, but can NOT have 1.5 of a quantity.

For example, a spinning ice skater can have a certain amount of angular momentum, and can then slow down to half that amount -- or three-quarters, or two-fifths, or .764 of that amount. An electron, on the other hand, can ONLY have a specific level of angular momentum -- not half that amount, not three-quarters, and definitely not .764 of that amount. Our Universe does not allow it to happen.

4) In quantum physics, it is a meaningless question to ask what IS the value of certain aspects of a quantum particle prior to measuring that value. For example, if you send photons or electrons towards a pair of slits, you will get an interference pattern on the detector behind the slits, even if you send the particles towards the slits one at a time. However, if you attempt to determine which of the two slits the individual particle went through prior to reaching the detector, the interference pattern vanishes. Experiments have shown that the any attempt to determine position prior to measurement will alter the final result.

5) Even weirder sub-set of (4): experiments have shown that just making a measurement of positon POSSIBLE will also change the final result -- even if you don't make the measurement! In the double slit experiment noted above, the interference pattern vanishes when the slits are set up to make it possible to determine which one slit the particle went through, even if the experimenter didn't do so! It's as if the particles are saying, "I know what you're trying to do, and I'm not going to let you do that."

It's been said, "If you're not bothered by quantum physics, then you don't understand it." I hope this BRIEF OVERVIEW of some of its consequences leaves you bothered.

This answer is:
User Avatar

User Avatar

Wiki User

14y ago

The basics of Quantum Physics is
1: Quaternion ( non-commutative) mathematics
2: Ew=nhc quantum relation where Ew is energy-wavelength or Energy moment.

This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is the fundamental assumption behind quantum mechanics?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Continue Learning about Natural Sciences

What is the fundamental assumption behind quantum mechanics Who first proposed it?

The fundamental assumption behind quantum mechanics is that particles and systems can exist in multiple states or positions simultaneously, until they are observed or measured. This is known as superposition. The theory was first proposed by Max Planck in 1900, and later developed by Albert Einstein, Niels Bohr, and others.


What is the Difference between relativity and quantum mechanics?

Quantum Mechanics is the study of the intimate behavior of the smallest forms of particles, and their interaction amongst, with special emphasys on the emissions of energy, which is delivered in quanta, or photons. Wave Mechanics is the study of many physical phenomena that happen in a non linear and recurrent behavior, usually addressed as wave, with special emphasys in both the features of said wave, and the energy that involves specific wave phenomena.


Is the quantum physics in tv show flash forward bogus?

The real science behind Flashforward http://newscenter.lbl.gov/feature-stories/2009/09/17/flashforward/


How do gravitons escape from black holes?

It's safe to assume gravitons, if they exist, don't escape from black holes, or at least, do not escape directly; but this does raise the interesting question as to how mass can interact with other mass if one of them is "hidden" behind an event horizon - could a force-carrier, including a force-carrier particle for gravity escape "outwards" through the event horizon. Gravitons remain in the theoretical realm, and only a few of their properties can be presumed, such as their class, their spin, and their mass (zero). If they are fit into the standard model it will require a theory of quantum gravity, particularly to resolve differences between known properties of the current standard model, since gravitons likely would require the background independence considered fundamental to general relativity. Until that time, general relativity, which proposes that matter affects space and the gravity is a component of spacetime (in other words, gravitation reflects a curvature in spacetime) might provide the most accurate description of how mass 'behind' the event horizon can affect matter outside it, and thus could obviate questions about force-carrier mediations relating to mass. Quantum effects could in theory support models of particle interactions of the gravity force carrier near the event horizon, based on similar theories consistent with quantum mechanics; Hawking radiation for example has been explained by fluctuations in spacetime boosted by gravity causing virtual particles located just outside the event horizon to become real, and thus allowing mass within the black hole to be 'carried away'; another theory posits that particles can escape from just inside the event horizon by exploiting tunneling (or quantum nonlocality) to 'escape.' Until gravitons are more fully described (or detected and their existence proven) the question itself could be shown to presume facts not in evidence and/or that theories describing the method of their escape from a black hole should be considered speculative.


What did Edwin hubbles childhood look like?

Bleak, littered with the empty cans of his Father's alcohol addiction and the lasting memories of his downtrodden mother. He found solitude in the comforting simplicity of the Universe and overarching curiosity in it's many phenomena. After developing an aptitude and understanding behind the mechanics of stellar objects, he dedicated his life towards the field of Astronomy.

Related questions

Who proposed the fundamental assumption behind quantum mechanics?

Max Planck


What is the fundamental assumption behind quantum mechanics Who first proposed it?

The fundamental assumption behind quantum mechanics is that particles and systems can exist in multiple states or positions simultaneously, until they are observed or measured. This is known as superposition. The theory was first proposed by Max Planck in 1900, and later developed by Albert Einstein, Niels Bohr, and others.


Who first proposed the fundamental assumption behind quantum?

Max Planck


Who preposed the fundamental assumption behind quantum mechanics?

Max Planck noted that, if one made the ASSUMPTION that the energy of a "chunk" of light (he used the word "quanta") was the product of the light's frequency and a constant (since called, no surprise, "Planck's Constant"), then the spectrum for a glowing body could easily be explained. Without that assumption, explaining the spectrum was pretty much impossible. Planck later admitted that he never thought that these quanta actually existed, he just noted the fact as a mathematical curiosity. However, this was the first time anyone proposed the idea of energy existing in discrete quanta.


Is Barack Obama an optical illusion?

Without going into the details of the quantum mechanics behind his trans-dimensional auto-projection into our world: yes.


What is the fundamental assumption behind quantum mechnics?

In classical mechanics, certain things about an object that can be observed and measured (we call these "observables") can have any value. Thus, the kinetic energy (in joules) of a baseball could be 110, or 111, or 109, or 110.1604826386937, or anything in between. This assumption led to some predictions that simply did not match experiment. Quantum mechanics assume that certain observables are limited to multiples of a specific number. Imagine, for example, if the KE of the baseball could be 110 or 120 or 100, but COULD NOT BE 105. At the energy levels of electrons, that's pretty much how our Universe operates. In the simplistic (and since HIGHLY refined) Bohr Model of an atom, an electron in a hydrogen atom could be one Bohr Radius from the nucleus, but it could not be HALF that distance from the nucleus. Why not? In our Universe, it just CAN'T.


What is the basic principle behind quantum mechanics?

The theory of quantum mechanics is mostly based on the idea that all particles are describe by wave functions. In other words, particles are not simply items located at a specific point in space. Instead they can only be described by probability distributions, we can only say that a particle has some probability of being found at some point in space, and that the particles may be found ANYWHERE in the universe (though with varying probability).The basic principles of quantum theory are Schrodinger's equation (which describes the evolution of a particle's probability amplitude with time), Heisenberg's uncertainty principle, (which denies the ability of science to ascribe a definite trajectory of a particle), and in some texts, the "canonical commutation relation" is presented as a fundamental principle of QM.


What is the Difference between relativity and quantum mechanics?

Quantum Mechanics is the study of the intimate behavior of the smallest forms of particles, and their interaction amongst, with special emphasys on the emissions of energy, which is delivered in quanta, or photons. Wave Mechanics is the study of many physical phenomena that happen in a non linear and recurrent behavior, usually addressed as wave, with special emphasys in both the features of said wave, and the energy that involves specific wave phenomena.


At what reasons quantum physics was uncertainty explain briefly?

The reasons behind uncertainty when it comes to quantum physics can be summed in one word - fragmentation


Do tattoos behind ear cause headaches?

There is no evidence to support such a ridiculous assumption.


What fundamental force is responsible for tidal?

Gravitational force between Earth - Moon - Sun is the fundamental force behind the tidal motion.


Who are the peoples behind modern chemistry?

Chinese, Greeks, Indians, Persians, Arabians were the first to use chemical reactions but the understanding of the atomic nature of matter, the discovery of the elements and the periodic table, thermodynamics, quantum mechanics and other concepts was not known until the work by mainly European chemists and physicists.