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Ozy and Millie: The theory of gravity
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Ozy and Millie: The theory of gravity

by orv on March 5, 2007 at 12:01 am
Chapter: Comics
└ Tags: color, millie, ozy
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Discussion (15) ¬

  1. Dranorter
    September 26, 2012, 4:01 pm | # | Reply

    A theory disproven by Einstein! Newton thought gravity was a force. Relativity showed him wrong.

    • Averagemoe
      September 4, 2014, 9:41 pm | # | Reply

      Are you sure you’re not thinking about time?

    • WJS
      September 3, 2016, 7:34 pm | # | Reply

      Um, what? Gravity is indeed a force, in fact it’s one of the four fundamental forces.

  2. Nabuquduriuzhur
    April 27, 2013, 7:35 pm | # | Reply

    I’ve wondered if it’s the absence of most energy in matter due to the casimir effect. Vaccuum is filled with particle-antiparticle pairs that disappear, with energy as the result. So, since matter does not have the energy of vacuum due to the casimir effect, wouldn’t the energy of vacuum tend to “push” matter, sort of like water on submerged rocks?

    • Aaaah
      December 16, 2013, 6:12 am | # | Reply

      You’re postulating an interesting idea but you’ll have to reconcile it with Hawking radiation which depends on the interaction between gravity and the Casmir effect.

    • bitflipper
      December 16, 2013, 7:36 pm | # | Reply

      General Relativity has it that gravity is the result of the curvature of space-time around concentrations of mass; that curvature tends to seek a minimum, and the concentration of mass prevents it from achieving that minimum. The attraction between two massive bodies is their mutual curvatures attempting to reach minimal curvature within their vicinity. Casimir force on two parallel plates near each other in a vacuum result from the inequality in the sum total sizes of virtual particle-pair formation and annihilation paths, or vacuum fluctuations, between the plates as compared with the sum total sizes of those paths outside the plates, and is unrelated to their mass or to gravity, but only to their size and the distance between them.

      In the end, it’s all geometry, but it’s applied differently depending on the force in question.

    • Scott's Folly
      May 30, 2015, 8:11 am | # | Reply

      Vacuum is indeed considered to be full of particle-antiparticle pairs, but that does not make it a net producer of energy. Energy is released when the pair annihilates, but that simply returns the energy that was ‘condensed’ to form the pair in the first place.

  3. confusedfox
    April 7, 2014, 7:48 pm | # | Reply

    perhaps this is irrelevant, but the theory of relativity was dis-proven when researchers (i think in Australia) found variances in the speed of light under certain conditions…

    • orv
      April 9, 2014, 10:48 am | # | Reply

      It’s a bit of an exaggeration to say it was disproven; the part of it that contends nothing can exceed the speed of light in a vacuum was called into question when neutrinos observed at CERN appeared to be traveling faster than the speed of light. I think the results have yet to be reproduced, but I’m not sure about that. Mind you, that wouldn’t invalidate the entire theory, it just suggests that, like Newton’s Laws, it may be insufficient to explain everything we observe.

      • Scott's Folly
        May 30, 2015, 7:59 am | # | Reply

        The apparent super-fast neutrinos were actually due to equipment and timing errors between CERN (where they were produced) and Gran Sasso in Italy (where they were detected). Subsequent experiments using different detectors continue to clock neutrinos at their normal relativistic speeds. Sorry, Fox, relativity is still valid.

        It will undoubtedly be found at some point in the future that Einstein’s Relativity is an incomplete special-case description of something bigger, but that wouldn’t make it invalid within its special case. Newton’s Laws are like that now: we know they aren’t a complete description, but for most ‘normal’ applications the difference is too small to be relevant.

  4. WaitingMan
    October 15, 2014, 7:59 pm | # | Reply

    There is no gravity. The Earth sucks.

  5. Averagemoe
    November 13, 2014, 10:41 am | # | Reply

    In theory, everything is a theory.

    • Little smile
      February 14, 2019, 5:48 am | # | Reply

      a game theory?

  6. Mazanec the Mongoose
    January 19, 2016, 12:58 pm | # | Reply

    I actually have the gravitation-is-just-a-theory bumper sticker on my car.

  7. Inconvenient Turtle
    August 17, 2020, 6:52 am | # | Reply

    Odd, no Tachyon post.

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