we are but a gravy train in outer space

Comments

• Chrobin@discuss.tchncs.de ⁨7⁩ ⁨months⁩ ago

  Gravity isn’t a force tho…

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  • JohnDClay@sh.itjust.works ⁨7⁩ ⁨months⁩ ago

    I put it in my force balance equations, it’s a force. It doesn’t matter that it’s from curving spacetime rather than exchanging particles, it still exerts force on things.

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    • Chrobin@discuss.tchncs.de ⁨7⁩ ⁨months⁩ ago

      But the point of general relativity is that a free-floating observer is equivalent to an observer in free space. That means that falling due to gravity, which you call a force, is an unaccelerated movement, i.e. no force.

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  • Zerush@lemmy.ml ⁨7⁩ ⁨months⁩ ago

    Well, its a geometric deformation of space-time by the force of mass

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  • quicksand@lemm.ee ⁨7⁩ ⁨months⁩ ago

    Yes it is. We just don’t know what makes it work

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    • Chrobin@discuss.tchncs.de ⁨7⁩ ⁨months⁩ ago

      In our current understanding of physics, it’s an effect from the curvature of space and not a force. Quantizing gravity results in unphysical divergences. Whether there will be a way to model gravity as an exchange of particles, we can’t know for sure. So according to our current knowledge, it’s not a force.

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    • JillyB@beehaw.org ⁨7⁩ ⁨months⁩ ago

      I’m no scientist, but there is some debate about whether it’s a fundamental force. Some think it might be like centrifugal force which isn’t “real” but shows up in a certain reference frame. Gravity might actually be a result of thermodynamics and entropy.

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  • cynar@lemmy.world ⁨7⁩ ⁨months⁩ ago

    Knowledge is knowing that tomato is a fruit.

    Wisdom is still not putting it in a fruit salad.

    Gravity isn’t a force. Its effects can be mapped to an equivalent pseudo force and used as such. Outside of general relativity, or Quantum mechanics discussions, gravity is a force.

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    • bwrsandman@lemmy.world ⁨7⁩ ⁨months⁩ ago

      But is it fundamental though?

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  • oce@jlai.lu ⁨7⁩ ⁨months⁩ ago

    Depends on your definition. If you stop at quantum mechanics way of defining a force with boson exchange then you may also say gravity doesn’t exist, because it’s not included in the standard model for now.

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    • Chrobin@discuss.tchncs.de ⁨7⁩ ⁨months⁩ ago

      Well, firstly, we can quantize gravity pretty easily, it just has unphysical divergences.

      But secondly, I think it makes most sense to talk about the current accepted physics because we don’t know how quantum gravity will work.

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  • JizzmasterD@lemmy.ca ⁨7⁩ ⁨months⁩ ago

    Don’t be saucy

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• xav@programming.dev ⁨7⁩ ⁨months⁩ ago

  Sir, this is a certified dad joke here.

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• troglodytis@lemmy.world ⁨7⁩ ⁨months⁩ ago

  Send me some biscuits quick!

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• AFC1886VCC@reddthat.com ⁨7⁩ ⁨months⁩ ago

  Gravy is one of the most fundamental forces

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