Comment on Feynman rules

ColeSloth@discuss.tchncs.de ⁨12⁩ ⁨hours⁩ ago

• ameancow@lemmy.world ⁨10⁩ ⁨hours⁩ ago

  “Look man, shit just be doing what it does because it is what it is. If weren’t that way everything would be soup or darkness.”

  Physics at any point when you ask “why” enough.

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  • bisby@lemmy.world ⁨8⁩ ⁨hours⁩ ago

    If you wish to make an apple pie from scratch…

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    • ameancow@lemmy.world ⁨8⁩ ⁨hours⁩ ago

      Image

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      • ivanafterall@lemmy.world ⁨5⁩ ⁨hours⁩ ago

        So glad we got to see what it looks like for Carl Sagan to toke up before they CGI’d it away (believable conspiracy I just invented).

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    • SaharaMaleikuhm@feddit.org ⁨8⁩ ⁨hours⁩ ago

      You must first invent the universe. - some nerd no doubt

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  • ColeSloth@discuss.tchncs.de ⁨9⁩ ⁨hours⁩ ago

    Pretty much. You get towards the bottom and on a fundamental level, there are some things that science just doesn’t know. We really don’t know how magnets work, when you get down to it.

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• WolfLink@sh.itjust.works ⁨8⁩ ⁨hours⁩ ago

  To be fair: "A magnet works because negatively charged electrons repel each other. "

  This is the Coloumbic (electrostatic) force, which is related to magnetism but this explanation would be insufficient to explain magnetism.

  “… Well … Ok, so hear me out. You’re going to need to understand quantum mechanics and then the fermion principal. Then you’ll know that the electrons aren’t allowed to occupy the same space, and the easiest way to avoid being in the same space is to not touch each other. The electrons know they aren’t allowed to touch because they’ve studied fermions.”

  This is the Pauli exclusion principle, which does act like a force, but is not the same as the electrostatic force or magnetism.

  Magnetism is moving electrons repel/attract/affect each other depending on the direction they are moving.

  The simplest explanation for that I know of is that force needs to exist alongside the electrostatic force for the motion of electrons to be consistent with relativistic time and space dilation effects.

  And no, that’s not a simple explanation, and it requires explaining relativity, and at the end of the day the best explanation we’ve got for the electrostatic force is more or less “electrons repel each other because they do”.

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  • MOCVD@mander.xyz ⁨3⁩ ⁨hours⁩ ago

    All models are wrong, some models are useful. A model that is 100% correct is just reality. Science and physics boils down to observation followed by explanation which comes in the form of modeling.

    New physics started when plank discovered quantization while integration raleigh-jean and weins laws for blackbody radiation. Schrodinger proposed a model among several proposed models and his fit the best.

    Anyone who is surprised by science not knowing all the answers had fundamentally misunderstood science.

    Finally, five fields: electromagnetic, gravity, strong, weak, and higgs. Magnetism is just an effect of leptons interacting with the electric field. That’s the model, one day when we can explain more with another model there will be more questions.

    Bonus points for anyone who knows the quote “who ordered that?”

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  • ColeSloth@discuss.tchncs.de ⁨6⁩ ⁨hours⁩ ago

    FYI; electrons are always negatively charged and protons always positively charged. So electrons, for instance, will always want to repel each other.

    But your conclusion is a more direct answer to the silly conclusion I gave. Which boils down to, “we don’t really know”.

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