Question about entanglement - quatum mechanics?
435375
Good question.  Without getting into the details (because I myself don't really understand them) entangled photons can be created by sending polarized laser light through matter.  An electron then absorbs the photon from the laser and emits tow entangled photons.\nTo get the photons separated, I'm pretty sure the photons travel in opposite directions after being emitted, so its just a matter of setting up laboratory conditions right.\nSpin can be detected by sending the photon through a magnetic field.\nAnd that's how quantum entanglement works.  It seems like this works instantaneously, but as of yet we can't use this to communicate faster than light.
47937
"god does not play dice" has been attributed to eintein but he was in fact misquoted on that issue. quantum mechanics and relativity being unified is the most important thing physics has been looking for since the discovery of quantum mechanics.It is unnerving that one set of laws applies to all matter but at a microscopic level a completely diderent set of "rules" apply
463641
see\nhttp://hyperphysics.phy-astr.gsu.edu/hbase/surten2.html#c1\n\n here you can find the answer for your question with MATHEMATICAL EXPLANATIONS.
257269
Sounds like you're asking about a quantum mechanical phenomenon sometimes called "spooky action at a distance."\n\nIn it's most basic form, it involves two "entangled" electrons (or any subatomic particle) If you could separate the pair by some great distance--even light years--and then influence some characteristic of one electron, its distant twin would react instantly to assume the same characteristic.\n\nTry this website for a more complete explanation -->http://www.everything2.com/index.pl?node_id=138524
305772
Seems to me that if you can manipulate 2 particles into entanglement (let's say one in New York, one in LA), then you can also manipulate a third particle (in Chicago) to the qualities measured in the first.  Sorry mathematician, but your two/three particle wave function theory although fascinating doesn't apply
634237
Ok here is my best explanation of the problem. The Schroedinger's Cat paradox is meant to try and disprove the Uncertainty Principle. This principle stats that particles do not actually have one set state, that they hover in limbo until you observe them. Therefore Schroedinger stated that since you cannot know if the particle decayed until you look does that mean that the cat is in a state or being both alive and dead since the particles decay directly affects the cats life. \n\nThe way I interpret this, being that I believe completely in the quantum theory is that a human need not be the observer once the particle is measured in any way it decides on a state and occupies it. Since the whole cotnraption is dependent on the state of the particle the particle is being measured. During this measurement the particle will "decide" whether it is going to decay or not, and the cat will be affected justly. It doesnt matter that no human has observed it the act of measuring its decay is enough to cause it to shake out of the murky non state and assume a definate state. I hope that helped
215021
Quantum mechanics is the wave particle duality.  \n\nQuantum mechanics defines particles as waves that are governed by the schodinger wave equation.  (or Dirac equation)\n\none of the results of quantum mechanics is that if you define a particle to exist at a single point then in a few moments it will begin to spread out in to a wave such that it exists over a small volume.\n\n\nNote added after seeing the answer below... \n\nThe Heisenberg Uncertanty Principle is found as a consequence of quantum theory
373953
Quantum mechanics deals with anything that can come in fixed quanta, which is basically everything if you get small enough!\n\nMass comes in its fundamental particles, but you have other fixed packets of energy that can be treated with particle behaviour.\nA photon is a packet of light.\nA phonon is a packet of vibrational energy.\nEven magnetic flux in a superconductor has a magnetic flux quantum.
303179
A quantum computer requires entangling quarks. To make an effective machine, you need hundreds of simultaneously entangled quarks. They would need to be stable, and hidden from view of any reading machine - if viewed, the quarks (due to quantum decoherence) would take on either a 0 or a 1, and the computer would fail.\n\nHowever, if you do it, you'll:\n\n1) be richer than your wildest dreams could ponder\n\n2) have caused a global security crisis, because every modern encription system could easily be solved by your computer, giving you access to practically everything on the internet.\n\nGood Luck!
1154260
Yes! in the Sub Atomic particle. Photons behave the same way.
753404
Yes...thus far, it IS the simplest and best explanation of gravity...quantum mechanics doesn't explain gravity at all.  What is NOW needed is a theory of "everything" that can link relativity to QM so that they're BOTH compatible.
340728
This is one of the best questions i have come across.In fact most Physicists have taken this cue for unravelling the problems of quantum mechanics. Look at the universe. Everything is moving in eleptical orbits. The sea shore is never straight and so are the trees, mountains and the rivers. The big bang and oscillating universe theory talks of tangential motion arrived through circular motion.\nStraightness is unnatiral!
251335
It can be "explained" with quantum mechanics. If you can find the movies of the lectures given by Richard Feynmen in New Zealand, there are 4 lectures if I am correct, In the first lecture he explains it very well in Laymans terms.\n\nIt takes a fair bit of explanation so I won't attemp to relate it here.
660849
http://www.joot.com/dave/writings/articles/entanglement/\n\nhttp://en.wikipedia.org/wiki/Quantum_entanglement\n\nim not sure about your level of expertise on the subject but some goods books are in search of Schodinger's cat by Gribbins and a basic level introduction introducing Quantum theory from the introduction series
1151689
The Aether does not exist.\n\nThe Quantum Aether Dynamics Institue exists only to con the gullible and stupid out of money.\n\nPut your credit cards away and learn some real physics.
530541
It does contradict Einstein's notions of locality. Yet laboratory experiments have demonstrated the non-locality of particle entanglement. The philosophical implication is that another dimension, call it hyperspace, transcends ordinary space. The universe is a single hyperparticle.
979351
The eigenvalues or energies of a quantum harmonic oscillator (QHO) is given by:\n\nE(n) = ħω(n+½), where n = 0, 1, 2 ... corresponding to discrete levels of quantum states that the QHO can occupy, and\n\nω = sqrt(k/m)\n\nk is the bond force constant, and m is the reduced mass\n\nHere we are given that the mass of one mole of gold is:\n\nMgold = 0.197 kg\n\nTherefore the mass of one gold atom is given by:\n\nm = Mgold/Avogadro's number = 0.197/6.022×10^23\n    = 3.27x10^-25 kg\n\nSo ω = sqrt(k/m) = sqrt[4(20)/(3.27x10^-25)]\n          = 1.5638 x 10^13 rad/sec\n\nHere I used k = 4 x 20 N/m as you indicated in the question, but I am not sure if this is correct.\n\nAlso, ħ = 1.054571 x 10^-34 J sec\n\nThen the ground state of the gold quantum harmonic oscillator is:\n\nE(0) =  (1.054571 x 10^-34)(1.5638 x 10^13) / 2\n\n= 8.2457 x 10^-22 J or 0.0051 eV\n\nYour mistake seems to be due to using the mass of an entire mole of gold atoms as the mass of the quantum harmonic oscilator, which can not be right since one mole of gold atoms would NOT exhibit any quantum behavior.