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QM isn't suitable for large systems as they have properties which can be seen where at the subatomic level you can say with more ease that nothing has any exact properties.
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What is true relativity or quantum mechanics?
Einstein's work on the Photoelectric effect, which won him the Nobel prize in 1921 was a bulwark of Quantum Mechanics. Einstein went off in another direction because of his inate suspicion that Quantum Mechanics has severe internal difficulties. Quantum Mechanics and Relativity have not yet been reconciled--but they are moving together slowly. Quantum Gravity seems to be key to the issue and may be resolved by String Theory.
Who has the greatest contribution in quantum mechanics among Heisenberg and Dirac and Schrodinger?
Heisenberg, Dirac and Schrodinger all made large combinations. Schrodinger is famous for his wave mechanics, Heisenberg for his matrix notation. Dirac realised that the theories of Heisenberg and Schrodinger were essentially the same. He also created the Dirac equation, an important step in the creation of a relativistic version of Quantum Mechanics.
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.
What is statistical thermodynamics?
Statistical thermodynamics uses probability and probability distributions for large collections of particles to reproduce the same properties of macroscopic systems already established by classical thermodynamics. In so doing it can give insights into the why's of thermodynamics. Statistical thermodynamics can utilize the equations of quantum mechanics for interatomic and intermolecular forces to further explain the thermodynamic properties of macroscopic systems of real matter based on what is happening down at the atomic level.
How does Pressure change effect the body?
on monday Quantum mechanics is a set of principles underlying the most fundamental known description of all physical systems at the microscopic scale (at the atomic level). Notable amongst these principles are both a dual wave-like and particle-like behavior of matter and radiation, and prediction of probabilities in situations where classical physics predicts certainties. Classical physics can be derived as a good approximation to quantum physics, typically in circumstances with large numbers of particles. Thus quantum phenomena are particularly relevant in systems whose dimensions are close to the atomic scale, such as molecules, atoms, electrons, protons and other subatomic particles. Exceptions exist for certain systems which exhibit quantum mechanical effects on macroscopic scale; superfluidity is one well-known example. Quantum theory provides accurate descriptions for many previously unexplained phenomena such as black body radiation and stable electron orbits. It has also given insight into the workings of biological systems. The phenomena which occur in the Quantum realm explain such subjects as the protein structures that run between different internal systems, such as neurons. It also describes the process accomplished by smell receptors. It was previously thought that Quantum phenomena only occur in controlled environments, but new information has been collected since then.
What is a quantum mechcanics?
Quantum mechanics is the description of the Universe, mainly on very small scales, as in subatomic particles. It has many weird aspects, that we are not accustomed to in our daily (large-scale) life.You can read an introduction to quantum mechanics, among other things, in the Wikipedia article "Introduction to quantum mechanics".
Is there any exsistence of particle that can obey both quantum mechanics as well as statistical mechanics simultaneously?
Quantum mechanics deals with things on the atomic and subatomic level. Statistical mechanics deals with large systems, on the order of 10^23 particles. So those are currently mutually exclusive areas of physics. That is not to say that one day that issue will be rectified, but as of current there is no overlap.AnswerI disagree. Statistical mechanics explains the connection between the very small and the not-so-small things. It explains large-scale properties, such as energy, temperature, pressure, current, etc. in terms of the movements of particles at an atomic scale. Statistical mechanics was first formulated in the 19th century, before quantum mechanics, and was built on classical mechanics; however, it has also been done for quantum mechanics.
Why unseen particles obey quantum machanism but not classical machanism?
"Classical mechanics" is what you get when you have large groups of particles. Large objects do obey the laws of quantum mechanics, but things such as the "uncertainty of momentum" become quite insignificant at larger scales.With individual particles, seen or otherwise - the laws of the quantum world become more relevant.
What is true relativity or quantum mechanics?
Einstein's work on the Photoelectric effect, which won him the Nobel prize in 1921 was a bulwark of Quantum Mechanics. Einstein went off in another direction because of his inate suspicion that Quantum Mechanics has severe internal difficulties. Quantum Mechanics and Relativity have not yet been reconciled--but they are moving together slowly. Quantum Gravity seems to be key to the issue and may be resolved by String Theory.
Who has the greatest contribution in quantum mechanics among Heisenberg and Dirac and Schrodinger?
Heisenberg, Dirac and Schrodinger all made large combinations. Schrodinger is famous for his wave mechanics, Heisenberg for his matrix notation. Dirac realised that the theories of Heisenberg and Schrodinger were essentially the same. He also created the Dirac equation, an important step in the creation of a relativistic version of Quantum Mechanics.
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.
Why is quantum mechanics not valid for humans?
Mostly a matter of scale and complexity. Large systems are much more complicated to solve in quantum mechanics than small systems (too many variables interacting with each other in infinite ways). The individual molecules in the human body can be shown to follow quantum mechanical rules exactly (here we are down to a manageable number of variables interacting with each other in infinite ways and mathematical techniques have been developed to get most of the infinite interactions to cancel each other out).Quantum mechanics is completely valid for humans. When one deals with quantum mechanics, they use what are called operators, specifically energy operators, which are simply energy functions acting on "physical-state" space. These operators give expected values when plugged into the Schrödinger equation, however, one would really only use all of this mess if they were dealing with phenomena on the scale of Planck's constant, 6.626 X 10-34 J•s.Now, you may have seen or heard somewhere that mass and energy are intimately related, which is true, but at the energy scale where Planck's constant is relevant, masses are VERY, VERY SMALL. At the energy scales that we use in every day life, masses are a WHOLE LOT BIGGER and so therefore we can very safely approximate the Schrödinger equation to the classical equations of energy, motion, momentum, etc. that the budding physics student should be familiar with. If these approximations could not be made, quantum mechanics would be a completely inconsistent and invalid model for humans since it would only be correct for very specific circumstances. However, it's precisely because of its consistency with the classical limit that makes quantum mechanics valid for humans.
What is statistical thermodynamics?
Statistical thermodynamics uses probability and probability distributions for large collections of particles to reproduce the same properties of macroscopic systems already established by classical thermodynamics. In so doing it can give insights into the why's of thermodynamics. Statistical thermodynamics can utilize the equations of quantum mechanics for interatomic and intermolecular forces to further explain the thermodynamic properties of macroscopic systems of real matter based on what is happening down at the atomic level.
How does Pressure change effect the body?
on monday Quantum mechanics is a set of principles underlying the most fundamental known description of all physical systems at the microscopic scale (at the atomic level). Notable amongst these principles are both a dual wave-like and particle-like behavior of matter and radiation, and prediction of probabilities in situations where classical physics predicts certainties. Classical physics can be derived as a good approximation to quantum physics, typically in circumstances with large numbers of particles. Thus quantum phenomena are particularly relevant in systems whose dimensions are close to the atomic scale, such as molecules, atoms, electrons, protons and other subatomic particles. Exceptions exist for certain systems which exhibit quantum mechanical effects on macroscopic scale; superfluidity is one well-known example. Quantum theory provides accurate descriptions for many previously unexplained phenomena such as black body radiation and stable electron orbits. It has also given insight into the workings of biological systems. The phenomena which occur in the Quantum realm explain such subjects as the protein structures that run between different internal systems, such as neurons. It also describes the process accomplished by smell receptors. It was previously thought that Quantum phenomena only occur in controlled environments, but new information has been collected since then.
Careers that use quantum mechanics I know this area of physics is more theoretical than anything but are there any?
The obvious choice would be a research or academic physicist. These are professions that are primarily in the public sector meaning that you would be employed by a university or the government. As for industry, there are still some companies that employ quantum physicists but they are usually R and D departments of large technology companies. Not a lot of businesses directly employ quantum mechanics directly, but there are a lot that use the results of experiments to develop new, and improve old, technologies. Possible areas for research include superconductivity, quantum computing, particle physics and string theory. Maybe chemistry too.
Why does Newtonian mechanics work for objects with large masses?
Those were the objects the mechanics were developed for.
What has the author Amadeu Delshams written?
Amadeu Delshams has written: 'A geometric mechanism for diffusion in Hamiltonian systems overcoming the large gap problem' -- subject(s): Differential equations, Mechanics, Nonholonomic dynamical systems, Qualitative theory
