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Why I gave up electronics club

⁨516⁩ ⁨likes⁩

Submitted ⁨⁨14⁩ ⁨hours⁩ ago⁩ by ⁨deHaga@feddit.uk⁩ to ⁨science_memes@mander.xyz⁩

https://feddit.uk/pictrs/image/975efc2b-3c0d-499e-a21b-f800d72ebd15.webp

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Comments

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  • bleistift2@sopuli.xyz ⁨13⁩ ⁨hours⁩ ago

    Obligatory XKCD

    Image

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    • howrar@lemmy.ca ⁨9⁩ ⁨hours⁩ ago

      Turns out Benjamin Franklin had it right, and it was this time traveler that caused him to flip it to the wrong direction.

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      • OpenStars@piefed.social ⁨5⁩ ⁨hours⁩ ago

        Damn time travelers, always never messing things up!

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    • SLVRDRGN@lemmy.world ⁨10⁩ ⁨hours⁩ ago

      Man, this one is a good one.

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    • orbitz@lemmy.ca ⁨10⁩ ⁨hours⁩ ago

      Always love their comics but since I don’t know crap about this stuff it’s amusing to see how this one is relevant to a meme. Wish I knew more but only so much I’ve learned so far. One day perhaps but not today.

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      • helpImTrappedOnline@lemmy.world ⁨9⁩ ⁨hours⁩ ago

        www.explainxkcd.com/wiki/index.php/Main_Page

        The contributes on this site do an excellent job explaining the comics. Not really ELI5, but more ELI15.

        It’s okay to not understand every comic, someone else out there figured it and explained it to us.

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  • Console_Modder@sh.itjust.works ⁨13⁩ ⁨hours⁩ ago

    You just have to ignore the existence of electron flow. Conventional current flow is all that matters, and the only people who use electron flow are those who design integrated circuits and lunatics

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    • ch00f@lemmy.world ⁨13⁩ ⁨hours⁩ ago

      You forgot science enthusiasts who are desperately trying to impress people.

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      • Console_Modder@sh.itjust.works ⁨13⁩ ⁨hours⁩ ago

        They get lumped in with the lunatics

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      • mnemonicmonkeys@sh.itjust.works ⁨7⁩ ⁨hours⁩ ago

        You mean the writers fpr “IFL Science”?

        Yeah, we don’t want them. They’re idiots

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    • JasonDJ@lemmy.zip ⁨10⁩ ⁨hours⁩ ago

      You mean to tell me that there are people out there whose job it is to design lunatics?

      That’s fucking awesome. Like a real-life comic book author.

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      • Track_Shovel@slrpnk.net ⁨8⁩ ⁨hours⁩ ago

        Let’s eat grandma

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    • ThePyroPython@lemmy.world ⁨12⁩ ⁨hours⁩ ago

      It’s also useful to think of the “ground” plane as a sort of well of potential charger carriers that the conventional current model overlooks. Aside from simultaneously visualising what’s happening inside simple ICs like BJTs / MOSFETs and the circuit diagrams I’ve found it a useful way for checking for common mode noise in circuit and PCB design.

      I guess this makes me a lunatic? Don’t know until we test it;

      Someone give me an asylum makerspace to takeover!

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  • bandwidthcrisis@lemmy.world ⁨4⁩ ⁨hours⁩ ago

    While we’re at it, is a compass needle’s North pole actually a South so that it points North? Or is the Earth’s North pole actually South so that the needle’s North pole points to it?

    (I know that I could look this up, I just want to confuse people.)

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    • mexicancartel@lemmy.dbzer0.com ⁨3⁩ ⁨hours⁩ ago

      But that’s by design, while this is a convention problem

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  • ThomasWilliams@lemmy.world ⁨11⁩ ⁨hours⁩ ago

    The current does flow from positive to negative. Electricity is not the flow of electrons - they just generate the field that the electric wave flows through. The electrons don’t actually move very far. The wave flows outside of the wire, not in it.

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    • Pee_comes_from_the_balls@lemmy.world ⁨3⁩ ⁨hours⁩ ago

      Electricity is not a real-concept, it is a qualitative aspect and the elec-root is what defines that aspect. There is no such thing as electricity, but there is current and in analog current, those particles flow as historically, that was the first convention for current. Also, electromotive force is what causes the movement of electrons, the magnetic field is just a componenent and does not induce EMR and the energy generated by it is akin to mechanical “work” caused by kinetic forces. It boggles my mind how even modern electrical engineers sometimes get this wrong.

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  • TheRealKuni@piefed.social ⁨13⁩ ⁨hours⁩ ago

    And that’s why we have positrons instead of the much-cooler-sounding negatrons.

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    • MajorMajormajormajor@lemmy.ca ⁨13⁩ ⁨hours⁩ ago

      Man, they have positrons and negatrons now? The Transformers franchise is wild.

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      • Assassassin@lemmy.dbzer0.com ⁨13⁩ ⁨hours⁩ ago

        We gotta keep them out of sports, they are too strong.

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      • TheFogan@programming.dev ⁨12⁩ ⁨hours⁩ ago

        Oddly when it came time to negotiations, they somehow realized actually calling yourself a Decepticon, was not a good name for inspiring trust.

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      • SkunkWorkz@lemmy.world ⁨11⁩ ⁨hours⁩ ago

        For some reason every Negatron in the last Michael Bay movie was a black.

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  • morto@piefed.social ⁨13⁩ ⁨hours⁩ ago

    “all models are wrong, but some are useful”

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  • j4yc33@piefed.social ⁨5⁩ ⁨hours⁩ ago

    OMG-O-S-H every circuit designed with conventional current just exploded because of your revelation here.

    /s

    My friend, this is the same branch of science that got us to space with calculations assuming spherical cows.

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  • _druid@sh.itjust.works ⁨13⁩ ⁨hours⁩ ago

    But then I get to talk about all those holes flowing.

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    • Lost_My_Mind@lemmy.world ⁨13⁩ ⁨hours⁩ ago

      Uhhhh…pornhub is that way ----->

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      • _druid@sh.itjust.works ⁨13⁩ ⁨hours⁩ ago

        Wait, no, but first, imagine marbles in a straw!

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  • Fedizen@lemmy.world ⁨11⁩ ⁨hours⁩ ago

    Couldn’t you fix this by also defining electrons as positive? Imo the physicists and electrical engineers should fight it out.

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    • Console_Modder@sh.itjust.works ⁨10⁩ ⁨hours⁩ ago

      The physicists are absolutely right. However, I reject their reality and substitute my own

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      • Fedizen@lemmy.world ⁨10⁩ ⁨hours⁩ ago

        That sounds like the electrical engineers I know

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  • IntriguedIceberg@lemmy.world ⁨12⁩ ⁨hours⁩ ago

    Could someone explain what makes one pole negative/positive? Like, could we have named them Alice/Bob or is there a specific reason we went with +/-?

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    • sbeak@sopuli.xyz ⁨1⁩ ⁨hour⁩ ago

      Since they are quite good opposites, the smart people who figured how all this worked decided on that and we stuck with it based on convention. Like how “Alice” and “Bob” were used in Computer Science since they are generic names beginning with the first two letters of the alphabet (it could have easily been any A and B name, but this is the convention!)

      Similar can be said for magnets, the “North” and “South” poles are good opposites. If other people started the trend, we could have easily gotten something else, but this is the convention.

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      • sbeak@sopuli.xyz ⁨1⁩ ⁨hour⁩ ago

        Another example, the use of “abc” and “xyz” in Mathematics. Or “ijk” as index variables when programming loops.

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    • Dalvoron@lemmy.zip ⁨11⁩ ⁨hours⁩ ago

      Guessing here, but +/- is good for describing them as binary opposites as that system already exists. This is a good thing assuming there are two types of charge/pole which behave in opposite ways (Eg move differently in a field). It’s also just good to use numbers so that we can describe the amount of + and the amount of -, which numbers already do. It also allows us to describe neutral as neither + nor -, but 0. Again, we already have a scaffold there for numbers and it’s easy to copy it for new things when that makes sense.

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    • Donjuanme@lemmy.world ⁨11⁩ ⁨hours⁩ ago

      Magnets.

      If there’s no field there’s 0, if there’s a magnetic field clockwise it makes a positive charge, if there’s a magnetic field rotating counterclockwise it makes a negative charge,

      Likewise if there’s a positive charge it makes a clockwise magnetic field and if there’s a negative charge it makes a counter clockwise field. (I may be backwards +/- clockwise/counter clockwise, something about the thumb on my left hand…, but really it’s all arbitrarily named, but the reason you just say negative or positive is that those are scalable measures, you can’t have half a Bob or 2 Alice. )

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  • takeda@lemmy.dbzer0.com ⁨12⁩ ⁨hours⁩ ago

    True, but most of laws, equations etc still work and only specific fields need to adjust for this.

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  • WolfLink@sh.itjust.works ⁨10⁩ ⁨hours⁩ ago

    There are situations where the charge carrier is positive (e.g. a positive ion flowing in a solution)

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  • Dalvoron@lemmy.zip ⁨11⁩ ⁨hours⁩ ago

    I guess it would work much more often, but also not all currents are electrons flowing (Eg ions, holes arguably). I doubt the convention causes much trouble for people

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  • Zacryon@feddit.org ⁨12⁩ ⁨hours⁩ ago

    Doesn’t matter in a lot of cases. Just state the flow direction and convention once and then stick with it.

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  • fleem@piefed.zeromedia.vip ⁨10⁩ ⁨hours⁩ ago

    so like, on my old car stereo system, the positive was actually coming through the frame of the car? scrape a little spot under the bolt of a seat?

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  • Chippys_mittens@lemmy.world ⁨10⁩ ⁨hours⁩ ago

    Red means on green means off, I hate electricity.

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