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Weird Science

Discussion in 'GMD Social Forum' started by Einherjar86, May 16, 2018.

  1. Bloopy

    Bloopy Active Member

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    I felt relativity was made mysterious and not explained nearly as well at high school as it could've been, even if it was a subject only touched on briefly. One thing that eventually made it click for me is that an orbit's like a straight line in 4D spacetime. It'd seem a lot simpler if introduced that way.

    Of course if I then think about it more deeply it becomes mysterious again. Physics theories are pretty much just mathematical models that fit appropriately. Each one opens up yet more questions ("Great, now tell me: what underlying mechanisms cause all the shit that this theory fits?")
     
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  2. Einherjar86

    Einherjar86 Active Member

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    I feel the exact same way about physics.

    I've yet to have a physics major enroll in one of my undergrad writing courses, which I've been waiting for. I've taught "Story of Your Life" (on which the movie Arrival is based) by Ted Chiang a few times; the text goes into differential equations more than the film does (I don't think the film discusses this at all). Anyway, the characters discuss the theoretical reversibility of time in classical physics, but in class I mentioned that the second law of thermodynamics sort of puts the lie to this (complex processes and entropy being irreversible). I still find this apparent irreconcilability between entropy and time symmetry (Loschmidt's paradox) fascinating.

    I've been reading lately on chaos and complexity theory, which is giving me a new perspective on physical systems.
     
  3. Dak

    Dak mentat

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  4. Einherjar86

    Einherjar86 Active Member

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    I just noticed this. Fucking fascinating. I've always been interested in the interplay of photonics that underpins our vision (e.g. I've reminded my students that when they look at themselves in the mirror, they're seeing their body as illuminated by the light reflected off a mirror--it's a largely inconsequential fact, but it drives the point home). This is really cool:

    Love it.

    Been reading about extinction lately:

    Damn.

    https://www.press.uchicago.edu/ucp/books/book/chicago/I/bo23093383.html
     
  5. Dak

    Dak mentat

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    I wonder if it's this along with other things that have yet to be identified that contribute to those "feelings of someone/thing around" that turn out to be accurate; stuff picked up subconsciously.

    Given basic evolutionary principles, wouldn't we expect this though? That new species pop up constantly and mostly fail to effectively compete?
     
  6. Einherjar86

    Einherjar86 Active Member

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    The brain picks up on things the conscious mind is totally blind to. So I wouldn't be surprised.

    Yes, but I just had no idea of the sheer numbers. It's incredible.
     
  7. CiG

    CiG Zen Arcade

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    Not sure if this really fits the thread's theme but I randomly came across this:



    This bird impersonates all other birds around them to try and attract mates, but because it lives in an area where humans encroach, it also impersonates cameras, car alarms and even chainsaws. Fucking amazing!
     
  8. The Ozzman

    The Ozzman D-FENS

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    Dude that is insane. I audibly said 'Holy shit' when the bird did the alarm sound
     
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  9. Einherjar86

    Einherjar86 Active Member

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    Awesome. This reminds me of something I read online yesterday:

    https://aeon.co/essays/why-does-keeping-a-bird-in-a-cage-make-people-happy

     
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  10. CiG

    CiG Zen Arcade

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    That's amazing. I went ahead and looked up Alex the African Grey Parrot and found these:





    Mind blown.
     
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  11. rms

    rms Active Member

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  12. The Ozzman

    The Ozzman D-FENS

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  13. rms

    rms Active Member

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    never heard of that until now hah
     
  14. The Ozzman

    The Ozzman D-FENS

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    Nibiru/Planet X/etc. Astronomers get more questions about that than actual space related shit lmao.
     
  15. Einherjar86

    Einherjar86 Active Member

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    I get shivers thinking about the Oort. Lot of uncharted shit out there.
     
  16. Einherjar86

    Einherjar86 Active Member

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    https://www.quantamagazine.org/famo...ve-alternative-to-quantum-weirdness-20181011/

     
  17. Einherjar86

    Einherjar86 Active Member

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    Just in case you want to read about where symmetry doesn't exist: https://www.quantamagazine.org/a-proof-about-where-symmetries-cant-exist-20181023/

     
  18. Dak

    Dak mentat

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    https://www.centauri-dreams.org/2018/10/29/on-oumuamua-thin-films-and-lightsails/

     
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  19. Einherjar86

    Einherjar86 Active Member

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    "...a new class of thin interstellar material." Sweet.

    Fucking math man. :rofl:

    https://www.quantamagazine.org/the-imaginary-numbers-at-the-edge-of-reality-20181025/
     
  20. The Ozzman

    The Ozzman D-FENS

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    Are they implying -1 is not in the set of real numbers?
     

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