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Time Travel? Scientific breakthrough in quantum mechanics rolls back time

Discussion in 'Too Hot for Swamp Gas' started by G8trGr8t, Feb 22, 2023.

  1. G8trGr8t

    G8trGr8t Premium Member

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    Scientists have rolled back time in the quantum world getting quantum particles to revert back to a previous state. Is this a breakthrough or a bleep? Quantum mechanics, entanglement, etc are fascinating to me, wish I was smart enough to understand how it could impact our real world.

    ‘We have made science fiction come true!’ Scientists prove particles in a quantum system can be rejuvenated (msn.com)

    Everything we perceive responds to the fundamental laws of physics we learn in school. Yet, quantum physics researchers agree that they do not explain the subatomic world, which shapes all reality at its most microscopic levels. This invisible universe presents instances of superposition (a particle can be in one state, in another or in both simultaneously), entanglement (the action on one particle instantaneously affects the other, even if they are separated by great distances), pseudo-telepathy and teleportation.

    This team of scientists has now demonstrated that these quantum particles can be rejuvenated or reverted to a previous state. Miguel Navascués uses an analogy to explain the significance of the finding and how they proved it. “In a theater, [classical physics], a movie is projected from beginning to end, regardless of what the audience wants. But at home [the quantum world], we have a remote control to manipulate the movie. We can rewind to a previous scene or skip several scenes ahead.”

    The ÖAW team developed a “rewind protocol” that enables any particle (electron, proton or muon) to revert to a previous state. Trillo led the way in proving this capacity theoretically and experimentally using a photon that evolves when it passes through a crystal. The creative use of an experimental device known as a “quantum switch” allows the light particle to return to its state at the beginning of its journey.

    “It was one of the most difficult experiments we’ve ever built for a single photon,” said Walther. “The fascinating thing is that [the particles] can return to a state you know nothing about.” In other words, said the scientists, “you can run it without knowing about the system, its internal dynamics, or even the details of the interaction between the system and the experimenter.”
     
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  2. tilly

    tilly Superhero Mod. Fast witted. Bulletproof posts. Moderator VIP Member

    [​IMG]
     
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  3. mrhansduck

    mrhansduck GC Hall of Fame

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  4. buckeyegator

    buckeyegator Premium Member

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    wow, scott bakula must be excited
     
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  5. oragator1

    oragator1 Premium Member

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    I saw an interview with a physicist recently who said that time was an illusion. That is just a freaky concept.
    Unrelated but because I just saw it, the James Webb telescope found galaxies similar to ours way earlier than was thought possible, so our understanding of even how the universe was formed might have to be reshaped. And by the way, Webb can see object back to within 200 million years if when the universe formed, around 13.5 billion years back into our past.
    I really wish I could be alive in 75 or 100 years to see how all this plays out.
     
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  6. docspor

    docspor GC Hall of Fame

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    time is a social construct
     
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  7. jhenderson251

    jhenderson251 Premium Member

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    Are you not paying attention? Just rewind your particles.
     
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  8. archigator_96

    archigator_96 GC Hall of Fame

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    I want my particles to rewind into the shape of this.
    [​IMG]
     
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  9. gatorchamps960608

    gatorchamps960608 GC Hall of Fame

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    5 hours in the quantum realm is like 5 years here.

    Facts.
     
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  10. channingcrowderhungry

    channingcrowderhungry Premium Member

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    Unless they were referring to the man-made concept of time, I don't think that makes sense. In fact, time is probably the least "illusion" of the 4 dimensions, as we are forever stuck in the present moment of time (unless we time travel.) We can always alter our other 3 dimensions, our XYZ coordinates, but where we are on the coordinates is always tethered to the 4th dimension, the current moment of time.

    The concept of space/time has always been super interesting and way above my brain capacity.
     
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  11. oragator1

    oragator1 Premium Member

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    Depends how you look at it. Here’s a good article on it.

    The Illusion of Time: What's Real?
     
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  12. channingcrowderhungry

    channingcrowderhungry Premium Member

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    I needed to smoke a lot of weed before reading that. Alas, I had to settle for a few beers.
     
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  13. Sohogator

    Sohogator GC Hall of Fame

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    I was re watching the Avengers Endgame and they said the opposite. It seemed pretty realistic so I’m going with that:)
     
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  14. oragator1

    oragator1 Premium Member

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    I’ve kinda become obsessed with this stuff lately, how the universe works. There’s so much crazy out there. There are galaxies we are incapable of seeing based on the laws of physics because they are more than 13.7 billion light years away. How? Because the expanding of the universe isn’t bound by the speed of light so the things near the edge are moving away at several times that speed. They might be 30 billion light years away. So there will never come a time when they are visible to us, even with the worlds greatest telescope, at least for 16-17 billion years.
    the numbers are beyond staggering. Peak star production for the universe was 9 billion years ago, and yet here we are. And every star in the night sky is in the Milky Way, which has about 250 billion of them. And there are maybe 2 trillion galaxies. And then the average star may have a few planets.
    Side note, the one thing besides a star you can see at night is the andromeda galaxy, which will collide with ours in 500 million years and set off a new star formation cycle.
    But we are so far from even knowing a little bit about what’s around us and how it works it’s like we are ants trying to build a nuclear reactor.
     
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  15. uftaipan

    uftaipan GC Hall of Fame

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  16. Trickster

    Trickster VIP Member

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    The past, present and future are seamless.
    "[C]hange really is an illusion, because there's nothing that's changing; it's all just there — past, present, future."
     
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  17. tilly

    tilly Superhero Mod. Fast witted. Bulletproof posts. Moderator VIP Member

    If time travel was possible and we only got one shot, we would likely just waste it... I myself would just go back to late 2001 and create a game plan to stop Travis Stephens.

    Think about how different things may be today.

    Its best I just never have such power
     
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  18. BobK89

    BobK89 GC Hall of Fame

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  19. BobK89

    BobK89 GC Hall of Fame

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    Better yet: stop 9/11 and the game would have been played as scheduled on 9/16
     
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  20. tripsright

    tripsright GC Legend

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    The weed didn’t help me better absorb the information. Still fascinating, though.
     
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