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Modern and Theoretical Physics

Atomic structure, nuclear physics, etc.

  1. This theory pertains to a theoretical future in which humans have designed different Dyson devices and have propagated throughout the Milky Way galaxy. With the power created from naturally occurring stellar collisions now noticeable through the detection of gravitational waves, the ability to harness such energy could power theoretical devices known as Alcubierre Drives. My theory is if a sufficiently powerful enough Dyson device could be designed to move stellar masses, a collision could be created between 2 stellar bodies much in the same way they occur in a particle accelerator. The resulting collision would create particles perhaps never before seen in the cosmos as …

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  2. Ya, This is not really a question but more of a request, I would like a list of every equation or summation with Δx = F(anything) that is confirmed to be correct in physics please list who made them originally and what they describe thanks if you would like to post on this thread doesn't matter what just who wrote them and what they apply to.

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  3. Started by Morris,

    I've noticed that there a a few different versions of this formula so are they all correct or is there a correct one. One of my physics books gives one and another gives a different one. Is it delta(X).delta(P) = h(bar)/2 or is it delta(X).delta(P) = h(bar) Surely they both can't be correct. If they are both correct, why? Or is one correct and the other incorrect? Thanks

  4. As you probable know, it's possible to achieve in a relatively easy way nuclear fusion with a Farnsworth-Hirsch fusor . But because most of the ions fall into the wires of the inner grid (and electrons collide with the wall), these fusors suffer from high conduction losses and do unfortunately not produce net energy. Would it be possible to design a new kind of fusor without this inner grid but that still confines the ions (and electrons) more or less in the centre? To investigate this I made a simulation program and came up with the following design: As you see in the image it consists of a vacuum chamber, a couple of charged rings and sphere…

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  5. Started by Morsi Tej,

    The String Theory (M-Theory) is the basis of modern physics, she has great mathematics, I want to know her equations, and how she observes the existence of eleven dimensions. Some one help me by puting equations or links, please.

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  6. Started by Vmedvil,

    Well, the Madala is the higgs of dark matter and is a particle they are looking for at the LHC, my question if Higgs bosons enter a tachyon state then give that extra energy via Cherenkov radiation in tachyon condensation to a weak transmitter like the Z boson, how does Dark matter gain this energy, what type of Force does the Energy get stored as only having Weak and Gravitational interaction. The Normal Sub-atomic particles store it in the SNF as gluons or in electrons as Charge, but Dark matter does not seem to have gluons or charge, so how is it being stored? What Field is storing this energy after Tachyon Condensation, which by definition does Decoupling on the Elect…

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  7. Started by MarkE,

    I think that the answer should be 'NO'. This is my explanation: The arrangement of atoms in a molecule can store energy. The same atoms, arranged differently, may hold less energy. It takes energy to hold a bond together, so by breaking it, you’re releasing the energy that held it together. Heat/fire therefore is the breaking of a formation and/or bond, just like glucose, oil (alkanes), ATP, they’re all ‘balls on top of a hill’ so to speak. (Why THIS arrangement has that feature, and not some other arrangement, is also quite interesting to me). The sun releases energy in the form of gamma rays by fusing hydrogen atoms together. Does this mean that the element hydr…

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  8. Started by Moontanman,

    How much energy is radiated from the sun in the form of neutrinos? https://futurism.com/60-years-since-they-were-first-observed-theres-much-left-to-learn-about-neutrinos/

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  9. When I read, "the universe was at an age of 300,000 years" in a post in another thread, I wondered how could anyone determine that number. Well, one might think an age was determined and then it was expressed in terms of years--so that the reader could understand. And how would someone determine that particular duration? What is the basis for any expression of duration. Anybody? Time is linear, memory is a stranger, history is for fools.... Roger Waters, Perfect Sense, Part I from Amused To Death

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  10. Started by PrimalMinister,

    I know relativity has been 'proved' but how do you know its what is actually going on as opposed to something that works but is not true/real such as epicycles. How do we know this is not just a repeat of this, making theories that work but are not true/real. Relativity seems like this to me, it is obviously onto something but I don't think its the actual truth, i.e. I don't think space-time literally bends and warps, I think the equations work (in certain conditions) but are not describing actual reality.

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  11. Started by hoola,

    what would happen to a gravity wave traveling through space and passing the region of a black hole? In considering the part of the wave which intersects the hole, does the hole swallow that part of the wave like any physical object ? If so, does the wave energy add mass to the hole? Thanks.

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  12. Started by beecee,

    Is string theory, or one of its derivatives still our best chance for a TOE? Is the verification or validating of string theory, hindered by our lack of technical know how and limitations in being able to observe at such infinitesamally small scales? Is the acceptance of multiple dimensions a barrier? Will the LHC or any similar experiment be able to shed more light onto the string regime story? My interest in string theory was first awaken after reading a book called "Hyperspace" by Michio Kaku, many years ago, but in the intervening years I have heard other scientists poo-pooing the idea simply because after so many years, it is still only hypotheti…

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  13. Started by t686,

    I have an idea to move a bank of weyl sheets relative to each other to create tunneling strings through the weyl cones either through superconducting levitation or moving vertical sheets past a surface with magnets under an overall driven field. Moving the sheets towards then away from each other at constant velocity can time a controllable string to flow instantaneously through those selected weyl cones by selecting the change in movement of those selected sheets. I thought about it and it's possible to shift the magnetic field up and down just across one sheet, and connect through wires to another sheet that has an independent up and down field too to link the t…

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  14. I watched this really cool video on you tube about Faraday and the electromotive force, this invisible force that forms loops . I then thought the earth, in this seemingly loop around the sun,is the earth stick in an electromotive loop of the sun?

  15. Started by Stolidog,

    It seems nonsensical that the earths atmosphere is held to it by gravity which is still an unproven theory when there is no apparent barrier keeping it from being sucked out to space which is a vacuum! Can somebody explain to me how the atmosphere stays around the earth. Also I'd like the answer to somehow include the laws of density and buoyancy as this obviously would be the alternative explaination to gravity should it be proven to not exist after all and that density and bouncy explains all things up and down.

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  16. According to the law of conservation of energy, energy can neither be created nor destroyed; rather, it transforms from one form to another. If that is so, then how is it the case that there is energy in the universe? Is the reason because the big bang led to the creation of an imbalanced amount matter and anti-matter that annihilated until there was only matter left in the universe? According to Einstein, anything with mass curves space creating a force we describe as gravity. Gravitational force creates potential energy that transforms into kinetic energy until equilibrium is reached. Therefore, the curvature of space caused by the mass of particles is fuelling the un…

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  17. Started by Enthalpy,

    Hello dear friends! I'd like to propose to produce radioisotopes using the D-D reaction in miniature Tokamaks, especially for medicine. Tokamaks (including stellarators) top the rate of permanent nuclear fusion reactions for a given size and input power https://en.wikipedia.org/wiki/Tokamak https://en.wikipedia.org/wiki/Stellarator so big machines fed with D-T claim to produce net energy (present) at affordable cost (uncertain future) https://en.wikipedia.org/wiki/ITER As a neutron source instead, the machines would Not try to produce any energy, even less net energy; Receive only deuterium (2H or D) without the scarce 50% tritium (3H or T); Be 10*10*10 times small…

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  18. The theory is taken from this page just in case: http://www.uio.no/studier/emner/matnat/fys/FYS4130/v14/documents/kompendium.pdf

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  19. Started by anndurill,

    Hi everyone, I have a question regarding the nuclear shell model. More precisely, I'm having trouble "just accepting" shells like 1p,...,1h etc, which would be forbidden in the electronic shell model -which the nuclear one was created in analogy to as to my understanding. (They appeared out of nowhere in our book(s) without further explanation). Unfortunately, I don't have any background in QFT (yet). However, I do recall from QM (from what I thought of was a general treatment) that the quantum numbers n,l,m,s lead to the allowed shells, i.e only 1s,2s,2d,3s,3p,3d,4s etc. Here, e.g. a 1p shell would violate the rule for l to be smaller than n... Can someone with …

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  20. Started by hoola,

    I saw a discussion of black holes of different sizes having differing gravity forces at the event horizons, but if the horizon is established by C, and C is constant, shouldn't the gravity at the surfaces be equal?

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  21. The text above derives gibbs energy to only be a function of entropy. Since I can't get math signs working I have to upload my question in an attachment:

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  22. Through out those years ? I have been conceptualized models with the law of physic; and I have gained the knowledge perhaps? not = to the superior one; but ! can any one challenge my knowledge; << Without regression .

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  23. Started by geordief,

    (as I am "arguing" from ignorance feel free to relocate this thread:) ) I have heard it said repeatedly that Einstein's equations fail at situations described as singularities and that there is in consequence an aim to fashion equations that might describe such situations in terms of both General Relativity and Quantum Mechanics(a hypothesized Quantum Gravity). Might it rather be that General Relativity is completely irrelevant in these situations ? Why is it that the equations describing the very small are unable to deal with these situations without the help of GR which only becomes applicable later on as the situation develops? (again apologies for t…

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  24. I read an article in a magazine which mentioned that a black hole spinning at near the speed of light can drag space around it. I could believe this more easily if space were a form of matter, the Higgs field say. If anyone knows more please let me know.

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  25. As most have said, the escape velocity of the EH of any BH is "c". If any photon is emitted just at this side of the EH of any BH, it will be forced to arc back and be swallowed by the BH, unless that photon is emitted directly radially away. In that case the photon will always hover just above the EH, never quite getting away but also never being swallowed by the BH. What you may have seen is a discussion of the "criticality" of the spacetime curvature near the EH and inside a BH.. You or I could in effect cross the EH of the SMBH at the center of our galaxy without any undue immediate effects.....But approach and cross the EH of a stellar size BH and one would quick…

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