Into the rabbit hole we go!

Comments

• ToiletFlushShowerScream@piefed.world ⁨3⁩ ⁨weeks⁩ ago

  University general chemistry introduced all these wonderful rules the universe followed and everything suddenly made sense and all was right with the world. Then organic chemistry spent class after class explaining how it was all BS and how every rule had so many exceptions that they weren’t actually rules anymore, and the walks back from class were gloomy and sullen.

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  • iocase@lemmy.zip ⁨3⁩ ⁨weeks⁩ ago

    I went through the same thing with electronics being taught the water model then you’re told to throw that out because AC doesn’t act like water.

    I say bullshit! My instructors didn’t understand AC well enough IMO

    Once you understand AC well enough you realize it still applies to the water model of electrical flow. Induction is inertia, capacitance is pipe deformation from pressure.

    When you slam a valve shut in an old house you make a massive pressure spike (inductive field collapse, flyback voltage spike) which oscillates within a resonant circuit when the pipes absorb that extra pressure by expanding, then releasing that spike back into inertia, which makes a smaller spike back into hoop stress until friction (resistance) saps all of the energy out of the circuit.

    You can make a DC-DC boost converter by opening and closing a valve really quickly on a long pipe and feed the pressure spikes into a check valve.

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    • john_lemmy@slrpnk.net ⁨3⁩ ⁨weeks⁩ ago

      Wish I had you as a teacher

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    • Tlaloc_Temporal@lemmy.ca ⁨3⁩ ⁨weeks⁩ ago

      Aren’t water flow, electrical flow, and mechanical flow all strictly analogous? As in mathematically equivalent, not just similar?

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  • Gust@piefed.social ⁨3⁩ ⁨weeks⁩ ago

    If it makes you feel better, thats also true in every other field of science. All models are wrong, but some are useful

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    • gandalf_der_12te@feddit.org ⁨2⁩ ⁨weeks⁩ ago

      depends on how you define science. if math is science, then no.

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  • Tollana1234567@lemmy.today ⁨3⁩ ⁨weeks⁩ ago

    gen chem was so brutal, many dint pass. or had to retake it. at least not with better than a C.

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• Wildmimic@anarchist.nexus ⁨3⁩ ⁨weeks⁩ ago

  Organic chemistry in a nutshell.

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• BreadOven@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

  As someone who had done grad school in chemistry…yes. You thought MO theory could explain most things but then there’s reactions that (presumably) go against Woodward-Hoffman rules. Then there’s other rules that go against other theories.

  Maybe we just need to solve the Schrodinger equation. Haha.

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• oce@jlai.lu ⁨3⁩ ⁨weeks⁩ ago

  A scientific model is valid within its limits of applicability. We will likely never be able to establish natural science models that escape this, even in physics.

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• Feathercrown@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

  I would’ve learned chemistry a lot better if someone told me up front that the rules were just heuristics

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  • Tollana1234567@lemmy.today ⁨3⁩ ⁨weeks⁩ ago

    or dint cram 2 semesters into 1.

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• Qkall@lemmy.ml ⁨3⁩ ⁨weeks⁩ ago

  weeps in physical chemistry

  That shit fucked me up…

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  • sem@lemmy.blahaj.zone ⁨2⁩ ⁨weeks⁩ ago

    I once saw a bumper sticker that said “honk if you passed p chem” and I honked so excitedly I almost hit a curb.

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• SpeakerToLampposts@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

  That’s true of pretty much everything. As John Von Neumann put it, “Truth is much too complicated to allow anything but approximations.”

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  • Kratzkopf@discuss.tchncs.de ⁨2⁩ ⁨weeks⁩ ago

    All models are wrong, some models are useful

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• rockSlayer@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

  And that’s why I dropped Chemistry at the last minute my first semester

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• HoneyMustardGas@lemmy.world ⁨3⁩ ⁨weeks⁩ ago

  My brain would short circuit. The irony of just getting something right to, then, realize it’s complications.

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