• ddh@lemmy.sdf.org
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    17 days ago

    The Spanish version is my favourite: la derecha oprime y la izquierda libera (the right oppresses and the left liberates)

  • jinarched@lemm.ee
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    16 days ago

    “La derecha oprime y la izquierda libera”

    The right oppresses, the left liberates

    • gerdesj@lemmy.ml
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      16 days ago

      La derecha oprime y la izquierda libera

      I just knew that would be Spanish, without being able to speak more than a few words. It works far better than our effort and is both a sardonic and satirical political comment.

      Well played Spanish if that really is the equivalent in common usage. Our effort sounds like it was invented by a young child whilst responding to a BBC quiz.

    • ILikeTraaaains@lemmy.world
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      14 days ago

      Never heard of that. When attending a trade school there was never the necessity of a mnemotechnic to know in which direction turn the tool.

      As other mentioned this kind of phrase is useless if you are in the opposite side of the thing you want to tighten/loose.

      What I always heard is “la regla del destornillador” (the screwdriver rule), as a substitute for the right hand rule.

    • ComradeR@lemmy.ml
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      11 days ago

      We say the same thing in Brazil, but in portuguese: “A direita oprime, a esquerda liberta.”

  • Masterkraft0r@discuss.tchncs.de
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    17 days ago

    In austrian german dialect, “Mit da Ua, draht ma zua.” which in standard german would be “Mit der Uhr, dreht man zu.” and in english “With the clock, turn it closed.” or something like that.

  • kambusha@sh.itjust.works
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    17 days ago

    I never really got that one, because “left” vs “right” only works when you are looking at the top of the screw. At the bottom, left tightens, and right loosens. So the one I remember is “clockwise to close”.

    Edit: the image on the post is actually a good example. If I’m off the screen to the right holding the spanner, then from my perspective, “left” would tighten.

    • Darohan@lemmy.zip
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      17 days ago

      I’ve always thought this too. I understand clockwise/anticlockwise and the direction being defined from the top - but it’s a circle - no matter which way you turn, it spends 50% of the time going either direction. The phrase works with screwdrivers (especially ratcheting ones), but not so much spanners or Hex Keys IMO.

    • Sterile_Technique@lemmy.world
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      17 days ago

      Agreed. If the screw moves left or right, it fell out of its hole, lol. I guess “clockwise” is hard to rhyme.

    • papertowels@lemmy.one
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      17 days ago

      I explained here, but that’s why I prefer using the right-hand-rule. Sometimes thinking about clockwise in strange frame of references hurts my little brain.

    • dQw4w9WgXcQ@lemm.ee
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      16 days ago

      It works for screws, but as a kid, I was never sure if the clock on the wall should be visualized attached to the ceiling or on the floor when saying “clockwise”. So I was always a bit hessitant on that.

  • Deadlytosty@feddit.nl
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    17 days ago

    In Dutch we have DROL, Dicht recht, open links. So close right, open left as a very strict translation. But DROL is also Dutch for turd.

  • Courant d'air 🍃@jlai.lu
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    17 days ago

    Not for screwing/unscrewing but in France we have a satire mnemonic for remembering right and left:

    The right hand is the one with the thumb pointing left.

    Works only if you look at the back of your hands, and obviously not useful. We use it mainly to mock someone who mix right and left

  • dQw4w9WgXcQ@lemm.ee
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    16 days ago

    I’m Norwegian. I never learned a rule in my language and always just went by instinct. Until ~3rd year of university in physics where someone told me tha the right-hand-rule applies to screws. Now I use that everywhere for screws in strange positions.

      • dQw4w9WgXcQ@lemm.ee
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        16 days ago

        Grab around a screw with your right hand and extend your thumb (like a thumbs up). Then rotating the screw in the direction which your fingers are pointing will result in the screw moving in the direction your thumb is pointing.

        Thumbs up for lifting the screw upwards, thumbs down for screwing the screw downwards. And you can move your hand around to figure out screwing directions for any tricky spots.

    • kamen@lemmy.world
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      16 days ago

      I’ve heard the right hand rule regarding magnetism and current direction (because it’s useful to illustrate correlation between vectors), but never about screws. Now that I think of it, it makes perfect sense there too, only that you have to imagine a thumb pointing down most of the time…

  • RBWells@lemmy.world
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    16 days ago

    You know this has always confused the fuck out of me. You are going around a circle, how is there left and right? There is up-and-left, down-and-left, either way is left. If I am starting on the right of the circle (assuming I’m looking at it) which way is right? Up or down?

    • Sludgeyy@lemmy.world
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      16 days ago

      Imagine it like a car steering wheel.

      You’d say turning the wheel to the right turns the car right.

      Think of it like this. Like your hand is holding on the top of the steering wheel.

    • Zement@feddit.nl
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      16 days ago

      Clockwise = Righty

      Or imagine a bottle cap instead of a screw… Muscle memory kicks in.

    • yonder@sh.itjust.works
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      16 days ago

      I always think about the direction that the top of the circle turns to apply left or right rotation, though I usually use muscle memory.

    • Cethin@lemmy.zip
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      16 days ago

      This has always annoyed me too. I know why it works, but it’s clockwise and counter-(or anti-)clockwise. If you were turning from the bottom, left and right are mixed up. Maybe it’s just too hard to come up with a phrase using those terms?

    • Krzd@lemmy.world
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      16 days ago

      It’s the top part. So if you imagine a little dot at the top (12h) position it would move to the right/clockwise or left/anti-clockwise

    • mexicancartel@lemmy.dbzer0.com
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      16 days ago

      Use right hand thumb rule. There is no right, there is no left, there is no clockwise or anticlockwise. All of them depend on the way you looks. Rught hand thumb rule fixes it for humans

  • Treczoks@lemmy.world
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    16 days ago

    The German version as actually survived its original time frame: “So lang das Deutsche Reich besteht, wird Schraube fest nach rechts gedreht” - “As long as the German Reich exists, a screw is tightened by turning right”

    • hikaru755@lemmy.world
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      16 days ago

      I’m German, and I’ve never heard that before. I’d be seriously weirded out by someone saying that or teaching it to their kids

      • Treczoks@lemmy.world
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        16 days ago

        I have to admit that this is rather old. So old, in fact, that it does not refer to the Third Reich but the Kaiserreich.

        • ours@lemmy.world
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          16 days ago

          That’s better but not that by much. A few years ago Germany raided some very rich and very well-armed wackos who wanted to bring back the Kaiserreich.

            • ours@lemmy.world
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              15 days ago

              German conspiracy wackos and American ones have a lot in common.

              During COVID their bullshit ven diagram was a flat circle.

          • CanadaPlus@lemmy.sdf.org
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            15 days ago

            Probably someone did. Not all English-speakers know about the first two, even though they’re implied by “third”.

            • Treczoks@lemmy.world
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              15 days ago

              I daresay that 99% of “English-speakers” never wasted a thought on why the Third Reich actually was the third.

              • CanadaPlus@lemmy.sdf.org
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                15 days ago

                And honestly, it could be that 90% wouldn’t know what the HRE was or who the Kaiser was once you told them. It’s just not a thing that usually comes up in everyday life.

            • Starb3an@lemmy.world
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              15 days ago

              Yup this was me. I knew it was the third, but it never occurred to me to ask what the other 2 were

              • CanadaPlus@lemmy.sdf.org
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                15 days ago

                TBH I knew about the Kaiserreich, but I had to look up the first one myself. It was the Holy Roman Empire. (Which wasn’t really much of a reich, but the Nazis weren’t noted for their attention to historical accuracy)

          • Treczoks@lemmy.world
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            15 days ago

            Never underestimate the incompetence of people, especially in the US, with regards to history. Just look how they are basically trying to recreate Germany’s 1933 at the moment.

        • bungalowtill@lemmy.dbzer0.com
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          15 days ago

          still mentioned twice in the thread. It‘s fucked up how often one would come across Germans casually throwing around Nazi language, looking for confirmation and when not receiving it claiming it’s just innocent fun. HiHiHi

            • bungalowtill@lemmy.dbzer0.com
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              15 days ago

              you think people don’t use it in that context?

              also, because you‘re so adamant, I tried to find a source for your claim. I failed. Want to share?

              • Treczoks@lemmy.world
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                14 days ago

                My source is my grandfather, who learned this during his vocational training, which predates the Nazis by quite a few years.

    • Eunie@feddit.org
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      16 days ago

      Never heard of this. We say ‘auf links, rechts zu’ and simply order the words alphabetically

  • 418_im_a_teapot@sh.itjust.works
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    16 days ago

    This phrase has never made any sense to me. It’s a circle. If one side is moving right, then the opposite side is moving left. So the phrase only makes sense if you specify which side we are talking about, which nobody ever does. Therefore it’s completely illogical to me while everyone else just gets it. Side note: Autism can be a real bitch sometimes.

    Edit:

    1. Some people don’t understand how I can see a problem. That’s cool, but don’t be a dick. We all look at the world through different lenses.
    2. This is when I was a kid “helping” my grandfather in the garage. I’m older now and understand that “righty tighty” references the top of the rotation.
    3. Some people rotate their perspective 90° and imagine themselves standing on the screw. Therefore when your face rotates to the right the screw is tightened. I hadn’t ever thought of that. But I had imagined rotating my perspective 90° the other direction –the top of my head as a screwdriver. In that case, “lefty tighty”
    • MrShankles@lemmy.world
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      16 days ago

      Clockwise and counterclockwise may be more intuitive for some people. Is the clock-hand (wrench) going forward in time, or backwards. But I don’t know of any quick rhyme for that

    • Ham Strokers Ejacula@reddthat.com
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      16 days ago

      But the entire rotation is either clockwise (right) or counterclockwise (left). Ultimately, its just a helpful reminder which way to turn lol

      • 418_im_a_teapot@sh.itjust.works
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        16 days ago

        Clockwise and counter-clockwise makes sense.

        But when you say “right” it’s not clear which side of the circle is being referenced. If the top of the circle is moving to the right, the bottom is moving left at the same time. So the saying only makes sense when you specify that you’re talking about the top of the circle.

        • pyre@lemmy.world
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          16 days ago

          you have to have never seen a steering wheel to not understand which side of the circle is being referenced. it’s always the top. who would even reference anything else and why.

          “turn it right”

          “which part???”

          “the middle of course, you absolute alien”

          • BCsven@lemmy.ca
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            16 days ago

            Because people get confused when there is no space for the wrench at the top, and they put the handle at the bottom and try to move the wrench left or right, not referencing the top of bolt.

            Because they aren’t using the saying as a clokwise/counter clockwise reminder but as a flat out instruction.

          • Cethin@lemmy.zip
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            16 days ago

            I think we can all understand how it functions but that doesn’t make it “correct.” It’s spinning around a circle. Exactly half of its moving right as the other half moves left. That’s why we have the terms clockwise and counter-clockwise. If left and right were actually reasonable for something spinning in a circle this wouldn’t exist.

        • RampantParanoia2365@lemmy.world
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          16 days ago

          Yes, it’s always the top side of the circle in this context, or you can think about how clock hands do go in a specific direction, because they’re a radius, not a circumference. There, now it’s cleared up for you.

            • gerdesj@lemmy.ml
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              16 days ago

              In Australia, it’s the other way around and the clock will try to eat you or at least sting you to death.

        • underisk@lemmy.ml
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          16 days ago

          Imagine it as if it were a track you were driving around, which way would you turn the wheel?

            • underisk@lemmy.ml
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              16 days ago

              If a steering wheel has you this perplexed then I beg you to never ever drive a vehicle.

              • crapwittyname@lemm.ee
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                16 days ago

                If you’re gripping the bottom of the wheel you move your hands left to make the car turn right. Which is kind of the whole problem here. Rotation around a centre doesn’t happen right or left. That’s the whole reason why the words “clockwise” and “anticlockwise” exist. Translation = right, left, up, down, forward, back. Rotation = clockwise, anticlockwise.

                • angrystego@lemmy.world
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                  16 days ago

                  It doesn’t matter where you hold the wheel. When you’re turning right, you’re always doing the right movement for tightening a screw, no matter the hand position. That’s the point.

                • underisk@lemmy.ml
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                  16 days ago

                  If I ask you to turn the car left and you give me this speech I would eject from the car.

          • CanadaPlus@lemmy.sdf.org
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            15 days ago

            So you’re explaining rotation, in terms of a smaller imaginary rotation, which engages with imaginary traction wheels, which engage with the work to be turned?

            If that works for you, great, but it is complicated.

            • underisk@lemmy.ml
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              15 days ago

              No im trying to illustrate the parallels between how you turn the wheel, how the car turns in response to that , and how they are all related. You turn left you will make the exact same rotational movement, with both the vehicle, and the steering wheel.

              It’s as simple as, “What direction do you turn the wheel to make the car go left?” I just stacked on top “and also it makes the car itself do that same exact circular movement” so you don’t just dismiss this as some kind of arbitrary convention.

              • CanadaPlus@lemmy.sdf.org
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                15 days ago

                Oh, I see.

                Car steering wheels work that way because of the convention. Change the side that the steering column’s pinion meets the rack and the wheel would work the opposite way. From the mathematical perspective, there’s two ways to continuously map an arc of the steering wheel to an arc of the wheels, and since they aren’t in the same plane neither is “wrong”.

                • underisk@lemmy.ml
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                  15 days ago

                  i know you can make the wheel work the opposite way, jesus christ. the circle motion the path of the car makes when you turn left is the same as when you turn the wheel to the conventional left. imagine, instead you steered “left” by a joystick. the car would still draw the same circular path the same fucking way, because turning left makes an anticlockwise circle, every time, in every situation.

        • Ham Strokers Ejacula@reddthat.com
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          15 days ago

          If this is truly something that doesn’t make sense to you, you may want to consider being tested for Autism if you have not already. This phrase is not something neurotypical people struggle with.

          And I say that as someone who is not clinically autistic, but who is real fuckin’ close to it. No judgment, I’m not trying to make you feel bad or anything, it is just an observation.

          I didn’t mean to unleash this torrent of comments on you, sorry.

        • Zron@lemmy.world
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          16 days ago

          What the fuck are you talking about.

          You’re either rotating the fastener to the right or the left.

          It doesn’t matter what side you’re talking about, because you’re not moving one side of the fastener, you’re rotating the whole thing one direction or the other.

          Clockwise just means something is rotating to the right.

          If I ask you to turn around to the right, are you going to ask me what side of you I’m referencing?

          • asap@lemmy.world
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            16 days ago

            Here is clockwise. One arrow is going to the right and one to the left.

            • threeganzi@sh.itjust.works
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              16 days ago

              I tend to agree but you could argue that from a perspective in the center of the rotation you’re turning to the right. Imagine standing in the center of those arrows.

            • Zron@lemmy.world
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              16 days ago

              The whole thing is rotating to the right, that’s what clockwise means. Clocks rotate to the right. One arrow is not pointing left, it’s pointing in the direction of rotation, which is to the right.

              • seth@lemmy.world
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                16 days ago

                You think this arrow is pointing to the right, when it is clearly pointing up and to the left? Fascinating.

                • Zron@lemmy.world
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                  16 days ago

                  If you follow that arrow around to the next with your hand, which direction is your hand moving?

                  That is indicating clockwise rotation, or a rotation to the right. We’re talking about circles here

          • doggle@lemmy.dbzer0.com
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            16 days ago

            If I ask you to turn around to the right, are you going to ask me what side of you I’m referencing?

            No, because humans have a pretty clear forward direction. Screws don’t. You say turn a screw to the right, do you mean make the top of the screw move right or the bottom move right?

            Most people assume the top, but not all, and the language is ambiguous.

            • CanadaPlus@lemmy.sdf.org
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              15 days ago

              Slightly, anyway. If you’re both standing over the thing it can potentially be agreed on. If you’re all over the place working on some big machine you need to use some language, and I’m not aware of a standard way to do it.

            • Zron@lemmy.world
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              16 days ago

              The “front” or “forward” direction of a screw is clearly the face of the fastener itself, be it a hex head, Phillips, or Slotted screw. Picking a side of a face as the front doesn’t make any sense. The whole thing needs to rotate one direction or another, and it will either rotate to the right to tighten, or the left to loosen.

              If I ask you what the front of a clock is, are you going to tell me it’s the top curve near the ceiling? No it’s the face of the clock, and the hands rotate around it to the right.

              • 418_im_a_teapot@sh.itjust.works
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                16 days ago

                The “front” or “forward” direction of a screw is clearly the face of the fastener itself, be it a hex head, Phillips, or Slotted screw.

                Correct.

                Picking a side of a face as the front doesn’t make any sense.

                Right. Nobody is talking about the under side of the fastener. Just looking it the face of the fastener, as one does when driving into something.

                The whole thing needs to rotate one direction or another,

                Wrong. A rotating circle rotates in all directions, including right and left, up and down, at the same time. If you attach an arrow perpendicular to the circle, pointing in the direction of rotation, then (if rotating clockwise) the arrow will point right at 0°, down at 90°, left at 180°, and up at 270°

                and it will either rotate to the right to tighten, or the left to loosen.

                You’re talking about the TOP of the rotation. The bottom of the rotation is moving the opposite direction. Just like the right and left sides move in opposite directions.

                Think about a wrench hanging off a fastener, handle pointing to six o’clock. To tighten it (clockwise), does the handle move toward your left or right?

                No it’s the face of the clock, and the hands rotate around it to the right.

                From nine o’clock to three oclock it rotates to the right. From three to nine it rotates to the left.

                The rule for the top of the rotation is “righty tighty”. For the bottom of rotation the rule is “lefty tighty”.

                The “righty tighty” saying doesn’t specify which side of the rotation it’s referencing, which as a kid helping my grandfather in the garage was confusing.

          • BCsven@lemmy.ca
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            16 days ago

            You aee assuming a top orientation moving to the right. Give somebody a wrench handle at the bottom of nut and tell them left to loosen, you will see how most take it literally and move handle to the left side of their body. they think in terms of their left and their right, not the screws right left from a starting location at top, or if from 4 oclock position to the “left of” 4 oclock as if you were facing the 4.

    • doggle@lemmy.dbzer0.com
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      16 days ago

      If you’re looking head on to the screw/nut/whatever then we’re talking about the top of the screw/but/whatever.

      You can also imagine if the nut was actually a wheel. Which way would you spin it to make it roll left or right.

      Confused the hell out of me at a young age. That’s how I came around to thinking of it

      • BCsven@lemmy.ca
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        16 days ago

        They mean is the wrench handle moving left from the 12 o’clock position or left from the 6 o’clock position. You would not believe how many people struggle with lefty righty because of start location.

        I defer to clockwise and counter-clockwise (anti-clockwise in UK). Except for new gen that never learned analog clock stuggles with this concept also.

        Then they encounter a Left Hand thread and the universe implodes

        • MrShankles@lemmy.world
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          16 days ago

          Shit, a standard thread feels natural to me, but a left hand thread still fucks my life up sometimes — trying to notice what’s going on before I strip it.

          My grill can connect to those camping propane tanks, but it’s threaded opposite… gets me every time

          • Bertuccio@lemmy.world
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            16 days ago

            I have left-hand threaded fittings on a few things and always say to myself aloud “This is reverse-threaded” before I attempt to turn them then still fuck up first turn. It doesn’t stop me from fucking it up the first time - it just helps me remember why.

            When I train new people on this equipment I tell them to say it aloud, show them, still fuck up the first turn, then they laugh.

            Then I have them do it in front of me including saying it aloud - and they fuck up the first turn…

            When you’ve been doing something unconsciously for decades it’s really hard to break.

          • BCsven@lemmy.ca
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            16 days ago

            I think it was old Chryslers had opposite lugnuts, I can only imagine how many stripped threads happened

      • corsicanguppy@lemmy.ca
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        16 days ago

        I love how half the people in this thread are under-thinking it and don’t seem to understand they’re doing so. I wonder whether it’s a bit.

      • gerdesj@lemmy.ml
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        16 days ago

        So where do you put the rest of your helices on a cylinder or cone, in 2D? In Flatland a screw or bolt becomes a circle with a short hair. The whole point of “leftie loosy” is to try to help with reality as we perceive it.

        Try it the next time you are underneath a car wielding a socket spanner with a taped on extension thingie that you jury rigged whilst trying to shift a hex nut at 45 degrees to reality that you cannot see, with oil dripping in your eye. Obviously the oil is a mix of the 30 year old native stuff loosened up with the WD40 that might break the rust lock.

        I suggest you do think abut things in 3D and don’t forget the other dimension (time). That WD40 needs time to break the rust lock.

        “Leftie loosy” isn’t for keyboard worriers - its for engineers and technicians, plumbers, and the rest and obviously for DiYers.

        When you are knackered and pissed off and you need to shift a fucking nut or bolt or whatever, you need incantations to get you back on track.

    • lefixxx@lemmy.world
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      16 days ago

      I agree but there is a intuitive way once you are holding it. I remember looking at a car wheel and the signal lever not understanding how do people decided that up on the lever means right. Yeah it’s connected to the wheel rotation but why turning the wheel clockwise means turning right? When I actually sat on the driver seat there was an instinct.For most people It’s more logical to look at the “top” of the circle and corelate it’s movement with turning left/right.

      A thing that annoyed me is when table top games use a non determinist way to define player order. It always depends on the observer.alIf you just say “then the you pass your turn to the left”, what left? From my perspective; from the top down perspective translating it to counterclockwise? From the tables perspective which is the opposite?

    • blockheadjt@sh.itjust.works
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      16 days ago

      I used to feel the same way. If you’re talking about the direction you’re moving your hand, it assumes your hand is above, not below.

      Had a similar hangup with less than/greater than symbols.

    • Seasm0ke@lemmy.world
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      16 days ago

      I remember when my grandpa was like why not just keep going? I was pulling the ratchet end of the wrench off the bolt at the bottom… I said but that side is left and he laughed and said its just to get you started and told me the clock thing. Dont ever ask me to put a nut on a bolt I will cross thread it every time.

    • CanadaPlus@lemmy.sdf.org
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      15 days ago

      SAME!

      Even “clockwise/counter-clockwise” is a bit vague if you’re not both on the same side of the thing, since something turning clockwise from one perspective turns counter seen from the opposite side.

    • gerdesj@lemmy.ml
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      16 days ago

      They are not a circle unless you have some really odd bolts or screws! I suppose a bolt looks like a circle in “Flatland” but we live in 3D space with time as a fourth dimension that we can directly perceive.

      A screw or bolt and the rest are, roughly speaking, a cylinder with a helical thread on it. They also have a “head” or similar which acts a stopper. You can model all of them as a bolt. We use a spanner, wrench, fingers, screw drivers, drill drivers, scissors, whatever to do the tightening or loosening. You can model all those tools as a spanner (wrench). We need some final mental contortions to make this slightly rigorous: The spanner (wrench) is always considered as being at 12:00 on an imaginary clock and we have to assume that our bolt moves away from us for “tighten” and towards us for “loosen” and I suppose we should also require that we are looking at the “face” of the notional clock and not its obverse!

      Now it should be obvious how the rule works. Turn the spanner to the right and you tighten the bolt, turn it to the left and you loosen it.

      OK that lot is not very helpful when you are under a sink or in a roofing void performing strange contortions. Try holding up one of your hands and pretend you are holding a bolt or the head of a screw. Clockwise turns will tighten and anti clockwise will loosen. You might use “leftie loosey …” to bootstrap: “clockwise tighten”. It becomes even more interesting when you are trying to work out which way to turn a bolt or whatever when you can only feel it and when tightening actually moves it towards you.

      Think about a bolt running through a wheel with the head towards us, say on a very simplified bicycle. Move the bike to the right, and hence the wheels turn clockwise. Friction should cause the bolt to tighten. If you change the design and put the bolt in on the other side and now forwards for the bike is to the left then you will loosen the bolt and that will be dangerous. Now change the design to a bolt with a nut and washers etc and it rapidly gets complicated!

      Also, please note that some bolts have reverse threads to the norm. On a garden strimmer the tightening knob that holds the spool on is often a reverse threaded bolt. That’s for similar reasons to the bicycle wheel thing I mentioned earlier.

      I’ve just spent ages and a lot of words to try and persuade you that this has bugger all to do with autism. I think that your error was really to do with not thinking too deeply about the real issue and focusing on the wrong thing. We all do that, extremely often, regardless of where we are on the spectrum.

      I hope that you see that considerations with regarding helical threads on a cylinder or a tapering cone (but not circles) can be quite complicated and that’s why sometimes we all need some silly rules to get us through the every day ordeal of dealing with them.

      Now, would you like a chat about circles … 8)

  • wuphysics87@lemmy.ml
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    17 days ago

    The Right Hand Rule (RHR). Point the thumb of your right hand in the direction you want something to go. Curl your fingers. That is the direction of rotation. Translate to any language which has hands.

      • isyasad@lemmy.world
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        16 days ago

        Your thumb is an arrow pointing at where you want the screw to go. After you curl your fingers, your fingers are arrows showing the direction to turn the screw

        • Instigate@aussie.zone
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          We were taught a similar trick in physics - point your right-hand thumb in the direction that current (or electrons, same same) is travelling and the curling of your fingers shows the direction of the resultant magnetic field that the current creates.

          • wuphysics87@lemmy.ml
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            I teach physics. A prof of mine taught me the right hand rule applies to right handed bolts. No accident they are named that. I teach this to students now. Maybe 1 in 10 like it. The rest prefer their old rhyme. Oh well. Can’t say I didn’t try

    • Today@lemmy.world
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      I know how to turn a wrench. Knowing the direction is the difficult part. Especially on toilets.

    • sunstoned@lemmus.org
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      The only thing I don’t like about this is the implication of a left hand rule for left hand threads, which makes my E&M physics brain sad

  • MacStache@programming.dev
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    16 days ago

    Finnish doesn’t have one. We just learn it by instinct and use the time saved to warm up the sauna.

    • sunbeam60@lemmy.one
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      Same for Denmark. Except instead of warming up the sauna, it creates time for another Tuborg.

    • wizzor@sopuli.xyz
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      Or we pretend to be opening a Koskenkorva bottle in whatever orientation the bolt is in.

    • gerdesj@lemmy.ml
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      “warm up the sauna”

      I get slapped when I try that sort of thing on with Sauna.

    • LifeOfChance@lemmy.world
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      It’s works most of them time unless you’re in a specialty trade making spindle, gears, and such that must be threaded backwards to avoid the wheel undoing itself.

        • dfense@lemmy.world
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          I heard from a gas guy that this is to ensure that only connectors made for gas usage are used and people don’t build crazy contraptions with plumber gear for flammable gases… Kinda makes sense.

      • bluewing@lemm.ee
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        16 days ago

        Yep, 80% of the time it works every time!

        The point is, if you fix things, you WILL run into left handed threads at some point. I’ve found them in washers, vacuums, blenders, bikes, and cars. Left handed threads aren’t the most common thing, but they are out there waiting to screw with your mind and ruin your day…

    • dunz@feddit.nu
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      Or when you’re screwing in a screw from behind/under something while lying upside down using a ratchet with an angled extender and you aren’t sure which way is actually left/right where the screw is.

    • linearchaos@lemmy.world
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      And you feel so incredibly dense every time you run into it and you can’t figure out what’s going on. The crank on my kids bike was out of whack the other week and I kept tightening it down and it kept coming back loose. I was turning the crank one way to tighten it which was pushing it against the lock nut but it needed to turn the other way to be pushed against the bearing before I tighten the lock nut down. If it was all right-handed it would have been clear what I was doing.

      • bluewing@lemm.ee
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        16 days ago

        Spindles and shafting are places you can find left handed threads. And it depends on the direction of rotation like that bike crank. Can’t have things coming lose due to the way bike cranks turn, so they a left handed thread to stay tight.

        It took me a long to time learn that when dealing with such things that I need to stop, look, and think about how things are assembled and why.