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  1. #1
    Atomic Punk
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    05.31.14 @ 08:17 PM
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    Default Finally - Scientist Look Into How Time Moves Forward.

    You'd think that there was a solid theory about basic time and it's forward movement but it seems that hasn't been the case:

    http://www.physorg.com/news139830010.html

    “In our everyday lives we have the sense that time flows inexorably from the past into the future; water flows downhill; mountains erode; we are born, grow old, and die; we anticipate the future but remember the past,” the scientists write in a recent study in Physical Review Letters. “Yet almost all of the fundamental theories of physics – classical mechanics, electrodynamics, quantum mechanics, general relativity, and so on – are symmetric with respect to time reversal.

    “The only fundamental theory that picks out a preferred direction of time is the second law of thermodynamics, which asserts that the entropy of the Universe increases as time flows toward the future. This provides an orientation, or arrow of time, and it is generally believed that all other time asymmetries, such as our sense that future and past are different, are a direct consequence of this thermodynamic arrow.”
    What a bunch of lazy pukes.

    The scientists’ method of measuring time asymmetry is best explained in the context of an experiment. In the macroscopic world, where glasses of milk are spilled, time asymmetry is obvious. But on the microscopic scale, because the amount of energy involved is so small, it’s more difficult to tell that entropy is increasing, and that time is moving forward and not backward. In fact, during some intervals, entropy might actually decrease. So even though overall entropy is still increasing on average, in accordance with the second law, the direction of time is not obvious at every moment in the experiment. Further, the scientists show that even an average entropy increase does not necessarily ensure time asymmetry, but can arise in an arrangement that appears time-symmetric.

    Feng and Crooks wanted their new measurement method to explain how time can move forward even at points when entropy is decreasing. To do this, they analyzed the folding and unfolding of a single RNA molecule attached to two tiny beads. By controlling the distance between one bead and an adjacent optical laser trap, the scientists could stretch and compress the RNA molecule. Initially, the RNA starts in thermal equilibrium, but, as it’s alternately stretched and compressed, the total entropy of the RNA and the surrounding bath increases on average.

    “We use an ensemble, or large number, of RNA trajectories to measure the time asymmetry,” Feng explained to PhysOrg.com. “Using work measurements for both forward and reverse experiments, we simply plug these measurements into an expression for A, or time asymmetry, in the paper. Assuming we know the free energy change, this gives the square of the length of time's arrow.”

    To measure time asymmetry in this arrangement, an observer watching the RNA’s trajectory of unfolding and folding should be able to tell if the trajectory was generated by stretching or compressing. The scientists quantify this observation in terms of the “Jensen-Shannon divergence,” a probability which gives a “0” if stretching and compressing are identical, a “1” if they are distinguishable at every moment, and some fraction of one if they overlap occasionally
    Okay, I take it back, this is a lot of work so I can see why it's been skipped since the 14th Century...
    "Nothing is ever what it seems but everything is exactly what it is." - B. Banzai


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  2. #2
    Damage your reputation seenbad's Avatar
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    11.30.17 @ 06:15 PM
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    Ok, I'll admit it. That went beyond me pretty quick.
    sheepa latta peepah dabba looka foh a moopy

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  3. #3
    Sinner's Swing! graeme's Avatar
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    11.19.17 @ 09:41 AM
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    Default

    Quote Originally Posted by seenbad View Post
    Ok, I'll admit it. That went beyond me pretty quick.
    Ditto. You know when it's not to your strengths when you read three lines at a time.....

    I understood the milk bit I think though.
    A man could lose himself in a country like this.

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  4. #4
    Eruption nicholas_kudochop's Avatar
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    08.08.17 @ 07:08 PM
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    Default

    How about a "law" dealing with time-travel? It sure is nice to talk about stuff...

  5. #5
    Baluchitherium Ted Van Halen's Avatar
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    12.13.17 @ 12:04 PM
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    I think I'm gonna have a seizure.
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  6. #6
    Forum Frontman fudd's Avatar
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    All I wanna know is are we gonna be able to go back in time cause I got some shit to take care of.

  7. #7
    Eruption VHwasCoolestWithDLR's Avatar
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    01.08.17 @ 09:19 AM
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    I didnt understand a word of any of that shit.

  8. #8
    Forum Frontman Double Down's Avatar
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    11.17.17 @ 12:11 PM
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    Default

    Quote Originally Posted by seenbad View Post
    Ok, I'll admit it. That went beyond me pretty quick.



    Yeah, that article went flying over my head in no time.
    .
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  9. #9
    Atomic Punk lovemachine97(Version 2)'s Avatar
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    12.13.17 @ 12:26 PM
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    If these scientists figure out a way to get me the 5 minutes back I spent reading that shit, post a new thread.

    That completely lost me.

  10. #10
    Atomic Punk ZeoBandit's Avatar
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    12.13.17 @ 06:12 AM
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    I got lost reading the title of this thread.
    "What we are dealing with here, is a complete lack of respect for the law" - Jackie Gleason, Smokey and the Bandit

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  11. #11
    Good Enough
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    12.09.17 @ 09:22 AM
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    Default

    Ahhhhhh!!!! Of course!!! It all makes sense now. Good find, Axxman!!!






    Sings like a bird. Rocks like a pig.

  12. #12
    Unchained Stidham's Avatar
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    10.11.14 @ 03:02 AM
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    Default

    Shit! I think I just had an aneurysm go thinking about this.
    Ladies and gentlemen, hobos and tramps, Cross-eyed mosquitoes and bowlegged ants; I'm here before you to stand behind you To tell you something I know nothing about... ~Sammy Hagar

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  13. #13
    Atomic Punk LLFHS's Avatar
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    07.30.17 @ 08:59 PM
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    I told a girl at work (who really is as thick as they come, therefore fun to fuck with) about a year or so ago that scientists recently discovered that we are all moving forward in time.

    Her face went white. "Can they stop it?" she asked.
    LowLifeFlatHeadScum

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  14. #14
    Future's in the past....
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    11.03.17 @ 01:35 PM
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    Default

    I've read it three times and still don't see anything about the flux-capacitor in there.
    11/05/78 Hollywood Sportatorium
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  15. #15
    Banned!
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    08.19.10 @ 08:10 AM
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    Quote Originally Posted by LowLifeFlatHeadScum View Post
    I told a girl at work (who really is as thick as they come, therefore fun to fuck with) about a year or so ago that scientists recently discovered that we are all moving forward in time.

    Her face went white. "Can they stop it?" she asked.

    Lol...you're so mean! That sounds just like something I'd say, and I'm not that thick.

 

 

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