Recent content by JoaoPais

  1. J

    Graduate Deep space Communication hypothetical question

    "We change" what i mean was exactly forcing the orientation of spin of one of the particles, but, you answered my question perfectly, so, after we measure the spin of one of the particles, we know what's the spin of the other, and that's it. We can't "use" them any longer as entangled particles...
  2. J

    Graduate Deep space Communication hypothetical question

    So, if I understand correctly, if we change the spin of one of the particles the entanglement is broken… ? Well, if the entanglement were to be maintained, we could create a communication line without the delay, it seems. If not, the faster we can go (for now =P) is the speed of light. Well...
  3. J

    Undergrad Electrons not inside the nucleus?

    My quoted statement don't say this. It says that, in 0 Kelvin, electrons fall to the nucleus, and yes, I’m aware that sentence is simply wrong, being a “classical” view of a non-classical event. The present discussion was mostly hypothetical, as I say so many times. But, i wonder what is the...
  4. J

    Graduate Do Virtual Particles Become Real Under the Weisenberg Uncertainty Principle?

    I’m sorry but, for me, the virtual particles seem as real as Higgs Boson, gluons or strings. A physical materialization of mathematic postulates that embody the best hypothesis to explain a certain observed physical phenomenon. I understand what you mean, but it seems to me the real difference...
  5. J

    Undergrad Electrons not inside the nucleus?

    Well, here you simply don’t have an activation energy, because the particles don’t have ANY kind of energy. Hypothetically, the electron simply fall to the attraction of electromagnetic force. Yes, that’s the problem with absolute zero. Isn’t possible, once the total lack of energy makes the...
  6. J

    Undergrad Electrons not inside the nucleus?

    Look, it simply isn’t that simple: Matter at 0k (impossible because it’s wave function becomes infinite) Close to zero – Bose-Einstein condensate formation (“superatom”) Also, if electron-proton pair has no distance, occurs an electro capture reaction SPECULATION At zero ----> electrons...
  7. J

    Graduate Why Are Extra Dimensions Beyond 3D Incomprehensible in Our 3D World?

    Yes, it takes a lot of imagination to see in 4D space, but the novel also has a small “dissertation” on this. it's quite interesting =) And if someone can really do it, yes, it would be a blind man, once they’re really used to imagine the space around them, it should be easier.
  8. J

    How: Thermally conductive yet electrically resistive.

    I don’t know if it’s still relevant, but some of the thermal conduction is also made by the free valence electrons in conducting metals, that’s why a good electrical conductor is in general also a good thermal conductor =)
  9. J

    Graduate Deep space Communication hypothetical question

    If the spin of one of two entangled particles was changed, the change would occur “instantaneously” in the other particle? Or the “entanglement” is broken?
  10. J

    Graduate Do Virtual Particles Become Real Under the Weisenberg Uncertainty Principle?

    I’m sorry, correct me if I’m wrong, but virtual particles aren’t only a mathematical device, once, as far as I know, are used to explain the Casimir effect. The virtual particles “come to existence” only to be annihilated again in an infinitesimal variation of time and space, with is associated...
  11. J

    Undergrad Electrons not inside the nucleus?

    Well, first I don’t think that we can get anything to 0 K, so, no one knows what would happen if we heat up the “matter” again. Either way , yes, it’s because the wave property that gives a probability of where the electrons are. The point is, you can’t even really describe a movement of the...
  12. J

    Graduate Why Are Extra Dimensions Beyond 3D Incomprehensible in Our 3D World?

    Yes, i understand what you're saying, and that is correct. Bu i think you are not getting the idea of observation throw a space with more than 3 spatial dimensions, sorry. In this subject, the book "Flatland" is truly enlightening =). I suggest you to try it, it's really small and interesting =)
  13. J

    Graduate Why Are Extra Dimensions Beyond 3D Incomprehensible in Our 3D World?

    I haven’t talked about any wall penetration or whatever, I was saying that from a 4d spatial world we could SEE behind a wall, not walk throw it. If you prefer, we could “jump” it, using a 4th dimension. I’m aware of string theory, and I can understand what you meant by the borders, but that’s...
  14. J

    Undergrad Electrons not inside the nucleus?

    The electrons are not attached because they have a high kinetic energy, and when they have no kinetic energy, this being at 0 Kelvin, yes the electrons fall to the nucleus and matter as we know it cease to exist =) Also you can’t forget that electrons in an atom don’t behave just like a...
  15. J

    Graduate Is recreating the Big Bang possible?

    I don’t think I’m understanding what you’re saying. =P It’s about recreate the big bang? If it is, well, I don’t think we’ll be able to do that in a long time, not so much because energetic limitations, but because we can’t even understand the true initial conditions! But even assuming that M...