Quantum Physics

Discussion in 'Science and Technology' started by Cenotaph, Jun 13, 2012.

  1. Cenotaph
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    Cenotaph 2+2=4

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    Not to be blunt, but... what the fuck is it?

    Consciousness actively changing reality? One object existing in two places at the same time? What is all this?

    Thoroughly confused... and would appreciate some help. :lol:
     
  2. IanC
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    IanC Gold Member

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    read a book
     
  3. flacaltenn
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    flacaltenn USMB Mod Staff Member Gold Supporting Member

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    It's kinda fascinating what physicists get paid to conjure up --- isn't it? You forgot "spooky interactions thru a distance" and dead/alive cats in a box..

    You know the E = MC(2) thingy? Quantum physics deals with the "empty" spaces between the smallest elements of matter. Where eventually -- everything relates to the energy side of the equation.. We KNOW what matter looks like and how it "exists" -- QPhysics struggles with conceptualizing the energy part..

    I'm sure there are GREAT books on the philosophical side of quantum physics..
     
  4. Mad Scientist
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    Mad Scientist Feels Good! Gold Supporting Member Supporting Member

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    Cenotaph, there's a really good animated explanation of quantum physics on YouTube that's maybe 5 or 10 minutes long.

    I'm on my Android right now so it's difficult for me to post it.

    EDIT: Here it is:


     
    Last edited by a moderator: Aug 18, 2014
  5. Middleoftheroad
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    Middleoftheroad Active Member

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    It is not conjured up. This stuff is tested. When you put two slits in a box and send light through, it makes one pattern, when you watch it, it makes another. As such when you are not watching the light passes through both slits and interacts with itself creating an interference pattern. When you try and determine which slit it passes through, it only passes through one and no longer interferes with itself.

    Also Schroedinger's cat is not to be taken completely literally. It is a thought experiment. Its purpose is to show that you can't know, until you look, as such you can only know probabilities, which is what QM is based on. Its based on the Heisenburg uncertainty principle that states that you can't know both the position and momentum of a particle, as finding one would change the other.
     
  6. uscitizen
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    uscitizen Senior Member

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  7. Greenbeard
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    Greenbeard Gold Member

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    Linear algebra, interpreted literally. The question of how to take perfectly functional (in terms of predictive power) mathematical equations at face value and then make sense of them intuitively is one of the great philosophical diversions of the last 100+ years.

    But no, it doesn't mean you can control shit with your mind.
     
  8. Quantum Windbag
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    Quantum Windbag Gold Member

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    I can sum it up in one sentence.

    God playing dice with the universe.

    Sounds a but trite, but that is what it comes down to. How can a photon know if there is someone watching it? How does it decide to go through two slits at the same time and interfere with itself if no one is watching, and then choose to go through a single slit when someone is? How can quantum entanglement work faster than light, unless we need to use it to pass information?
     
  9. uscitizen
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    uscitizen Senior Member

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    controlling shit with your mind is what politics is all about.
     
  10. Quantum Windbag
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    Quantum Windbag Gold Member

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    Schrodinger tried to show how absurd the Copenhagen Interpretation is by talking about the cat, turns out he proved how limited we are.
     

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