Quantum Theory
Quantum physics and related topics.
2153 topics in this forum
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Does the electron change the direction as it passes through a slit?
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Reputation Points
- 11 replies
- 2.5k views
- 2 followers
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I recently came across this experiment while researching about Quantum Phenomenon. There are a large number of articles and videos claiming that the results imply something like retrocausality or a backward in time influence. At the same time there are also a lot of articles and papers claiming that there is nothing mysterious about this experiment and it's simple correlation. I was just curious whether the implications of this experiment are actually a debatable topic which could allow either of the above interpretations to be true or has it been conclusively proven that one theory is correct while the other is wrong ? Thank You
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- 19 replies
- 3.5k views
- 3 followers
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Why Radon is gas under ambient temperature, but Gold and Lead are solid bodies? Even though Radon atoms are heavier.
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- 6 replies
- 1.6k views
- 1 follower
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The author recently published a preprint that links a certain "quantized" classical algorithm for solving the 3 SAT problem as equivalent to real quantum computation. This algorithm might be of interest to you if carry out research in either satisfiability, quantum programming or general quantum theoretical physics and any feedback would help us improve our algorithm. . Check out our details here: LINK REMOVED
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- 2 replies
- 1k views
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To better understand the relationship between space and time you must quit thinking on large scales of whole objects such as people or planets and take a look at a single atom. You can then appreciate and partially understand the infinitesimal nature of how vast existence is. How many times does an electron orbit a nucleus each second? Now you can see how vast space is, don't forget that electrons and protons are huge compared to quarks and other tiny particles. Just how far is an electron from a nucleus? If you recorded an electron for one second and then slowed your recording down to watch each revolution around the nucleus you would die of old age before you …
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- 15 replies
- 2.4k views
- 3 followers
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Suppose that the position of a photon is measured such that the position Wavefunction collapses to minimum uncertainty without the photon being destroyed. At approximately what rate would the wavefunction spread out and approximately what size would the collapsed wavefunction be?
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Reputation Points
- 8 replies
- 2.5k views
- 2 followers
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Good day, I'm student and i would like to ask a question about how molecule can go to the ground state from excited state, by absorbing the photons, in the end red shifted photons with lower energy are released. This is the principle of STED microscopy, that is used to limit amount of observed material. But me and teacher can not explain this situation. We were tough that if molecule absorbs photons/energy then it gets excited, but this situation is vice versa. I would be glad for any responses and answers, thanks!
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Reputation Points
- 2 replies
- 1.4k views
- 2 followers
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"Quantum states are detectable but by the law of quantum mechanics, once we observe a quantum state, it changes. Nice thing is entanglement means we only have to observe one of the particles to sense the state of the others but its not two way data transfer, not yet." Trace Dominguez with Seeker "It's common to all ways of understanding quantum mechanics that I know of that observation is a sort of irreducibly violent process." Physicist David Albert on Nour Foundation "When a quantum "observer" is watching Quantum mechanics states that particles can also behave as waves. ... In other words, when under observation, electrons are being "fo…
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- 3 replies
- 3k views
- 1 follower
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Is the Uncertainty Principle based on duality at the same time? Should there be Certainty Principle that is just for observed quantum particles?
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Reputation Points
- 3 replies
- 1.3k views
- 1 follower
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The admins don't want you to know that a particle is either matter or a wave (not both at the same time). Waves are able to tunnel or fit through gaps that are smaller than their physical structure they are supposed to represent because they are only waves of information. Placing a detector that allows a particle to continue moving will set what the particle will be(state) before it starts moving. (wave or physical) The quantum field knows the path a particle will preside before it exists. If it is expected to be a particle, it will swap to spacetime and not the quantum field.
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- 10 replies
- 2k views
- 3 followers
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It seams to only matter if a detector is placed that allows the particle to continue moving on its path.
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- 5 replies
- 1.4k views
- 2 followers
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Are there any scientists tried to relate the two, in hypothesis and calculations?
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- 4 replies
- 1.7k views
- 1 follower
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I'm trying to understand the concept of "light as waves", As far as I know, "wave is a disturbance in a medium" , to me it seems like wave is not an object, but it is a phenomenon. So if light is a wave, does that mean a light is just a disturbance through medium? I'm lost
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Reputation Points
- 4 replies
- 1.3k views
- 1 follower
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Is psi (Ψ) identical to "superposition"? Or are they two different properties? The reason I ask, is because I've never been able to find a straight answer.
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Reputation Points
- 11 replies
- 2.4k views
- 1 follower
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Well we all know what events gravity creates : an apple falling from a tree , planets orbiting around the sun . Until the mid 1920's we thought that gravity was the attraction between objects with mass , but Einstein came and said nope : gravity is the bending of space-time around something with stress . Quantum mechanics is the theory that describes the world of subatomic particles , the foundations of you , me , everything . However at its original form quantum mechanics didn't describe how those foundation blocks interact with each other . So some physicists tried to unified Relativity and Quantum Mechanics to describe those interactions. Th…
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- 52 replies
- 28.7k views
- 1 follower
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From what I understand, the rate of a wavefunction's spread after its collapse can be manipulated if one starts with particular states. How would one calculate this, specifically in the case of photons if the calculations are different from other particles?
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- 7 replies
- 1.5k views
- 1 follower
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Those words were spoken long before the delayed choice quantum eraser experiment was done, or the recent Wigner's friend experiment. Both experiments point to the observer, not the equipment, as the culprit for quantum change. What is your personal - not professional - opinion about this?
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Reputation Points
- 17 replies
- 4.2k views
- 1 follower
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Would anyone like to walk with me down the yellow brick road of 'The Talk', as I try to understand quantum computing myself? http://www.smbc-comics.com/comic/the-talk-3 I arrive at the frame that begins "In Quantum Computing, the whole idea..." So you don't need a jillion photons to paint an entire interference pattern to do useful quantum computing? You just wait for a single photon paint stroke to arrive representing a single 'right answer' to have a useful computation for whatever supra-double-slit geometry you're investigating? And, if necessary you wait for a sufficiently long time to satisfy yourself that no right answer is findable if the 'projecti…
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- 8 replies
- 1.9k views
- 1 follower
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Do exist some way to create near infinite energy barrier at the metal-p-type semiconductor interface? Possibly some quantum effect?
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- 3 replies
- 1.4k views
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If someone has access to a lab please do this variation on the double slit experiment to show that what is affecting the result is different time dimensions. Rather than record using slits run the experiment like this. Have the wall facing the laser made from light sensitive material and 4 extra walls coming out at angles say 135° from the main wall (similar to reflectors on photographic shoot lighting) these also made from light sensitive material. The angle should be relational to the distance from the laser so these walls central point is the same distance from the laser as the main wall facing the laser directly. Run the experiment to watch the photons and again not w…
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Reputation Points
- 5 replies
- 1.5k views
- 1 follower
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Can someone on a lab perform the double slit experiment counting the hits as specified below please, I am certain this is the solution, Where tpf = total photons fired hfw = hits on front wall hbw = hits on back wall If we assume a certain percent of photons always get through the slits say 10% then if 1000 photons are fired When recorded to see which slit they pass through the amount of hits will be tpf1000 = 900hfw +100hbw When not recorded to see which slits the photons pass through tpf1000 = 900hfw +100hbw+2(900)hbw or tpf1000 = 900hfw +100hbw+3(900)hbw or tpf1000 = 900hfw +100hbw+5(900)hbw or tpf1000 = 900hfw +100hbw+7(900)hbw Etc depen…
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Reputation Points
- 1 reply
- 1.2k views
- 1 follower
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Well there are skeptics who've taken Tyson to task that the notion's not a testable hypothesis. P Z Myers did a piece We have a term for that, Neil deGrasse Tyson: "Intelligent Design".
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Reputation Points
- 22 replies
- 2.9k views
- 2 followers
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There are several quantum numbers used to explain the energy states of particles. For example, no two electrons can have the same four quantum numbers in an atom. Now, I was wondering if the following "guess" I had about antimatter particles is plausible: a quantum number is added to "describe" the states of an electron and a positron, a quantum number that would have a two-valuedness with the purpose of "describing" one more degree of freedom, where, for example, an electron and a positron can't have the same set of quantum numbers and as a result these particles are observed as a matter/antimatter pair. Perhaps my "guess" is none other that the lepton number and I am ov…
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Reputation Points
- 15 replies
- 2.7k views
- 1 follower
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The Observer effect and Uncertainty principle are the same? -When you try to observe/measure a wave(momentum) it becomes a particle(position).
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Reputation Points
- 56 replies
- 12.6k views
- 3 followers
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According to this picture there exist a certain bandgap (over 1 eV) in Lead between the lowest band (which I assume corresponds to some hole states) and all other bands (which I assume correspond to all other electron and hole states). Does it mean that Lead is a unique metal with band gap between a hole and electron states? Does it suppose to have some semiconducting properties then? https://www.researchgate.net/figure/Color-online-Calculated-band-structure-of-bulk-lead-with-solid-lines-and-without_fig1_45935753
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Reputation Points
- 0 replies
- 3.1k views
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