• @Kowowow@lemmy.ca
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    1211 months ago

    How I feel about meters per second that gets changed to miles per hour and I just want kilometers per hour

    • DarkSirrush
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      11 months ago

      M/s to km/h is nowhere near as bad as any of the imperial conversions though. (M*60*60)/1000… Or, M*3.6 if you want to simplify it.

  • @frezik@midwest.social
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    6611 months ago

    Fun penis fact: if you tell people you’re 6.5 inches, it sounds like you’re trying too hard to get that last bit of length. If you instead say 17cm, that’s just how long you are.

    You’re welcome, fellow penis owners.

  • @limelight79@lemm.ee
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    211 months ago

    All these comments, and I’m wondering who would ask someone about their height like this…it’s pretty easy to estimate someone’s height just by observation.

    • Ephera
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      311 months ago

      Eh, I’ve seen it as a smalltalk topic, to just want to know what the height is precisely, especially when someone is particularly tall.

    • @Zess@lemmy.world
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      111 months ago

      Personally I find 6 big unit + 2 small unit easier to visualize compared to a large number of small units 🤷‍♂️

      • @set_secret@lemmy.world
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        1511 months ago

        That’s because your conditioned to do so. If you grow up with cm as your default height measurement it’s just as natural as your 4 foot 6 or whatever. 180cm i can easily visualise, it’s not that either is inherently better (although you know in your heart the metric system is superior 😉)

        • Ephera
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          211 months ago

          Yeah, the adult range is roughly 150cm for a tiny woman, up to 200cm for a towering man. 170cm is pretty average for a woman. 180cm is pretty average for a man.

          So, 188cm is already a rather tall man.

      • @CaptKoala@lemmy.ml
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        111 months ago

        Most of them, I hadn’t heard of the term until your reply., never used Kelvin, mole or candela before.

  • @Bianca_0089@lemmy.today
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    11 months ago

    I just wish people would step up to a bigger scale when it’s needed or to a smaller scale for the same reason. I hate seeing big massive boats measured in thousands upon thousands of centimeters instead of just using meters or feet, and it’s annoying when people say their height in hundreds of millimeters.

    Or when knife-blade thickness gets measured in hundredths of decimal inches or weird fractional measurements instead of just using millimeters since it’s a smaller unit.

      • @srecko@lemm.ee
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        111 months ago

        In my language 100 is just tree letters so most of the people just say 170 insteand of meter 70 because its shorter

      • @NeatNit@discuss.tchncs.de
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        11 months ago

        IDK about english-speaking places, but in Hebrew we’d say “meter 70”. I never thought about whether this is strictly grammatical in Hebrew, but by the descriptive approach I guess it must be because it’s commonly used.

        Edit: but it doesn’t really work when you want to write it as a number so you’d have to write either 1.70m or 170 cm (if you prefer 1m 70cm that’s fine but it’s two numbers)

    • @NeatNit@discuss.tchncs.de
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      311 months ago

      I hear americans measure tire thread depth in 32ths of an inch?? I mean it’s nice that you’re using powers of two but huh?

  • @rambos@lemm.ee
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    411 months ago

    I don’t get why Americans and some other countries don’t use metric system. Guys! x10, x100, x1000 or mm, m, cm, km is way easier than 🦶, ", ', mile, yard or whatever weapon you use to hurt yourself lol. I know scientists get that, but its easy for them to convert anyway. Imagine that 120 cent is 1$ haha

    I’m familiar with both, but only use inch for screen size and for some specific pipes that are made in ". And yeah, the guy from the picture is 188 cm tall or 1,88 m. Don’t think anyone use 10th of the mm for that and even if they did they would probably say 1879,6 mm

    • @PowerCrazy@lemmy.ml
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      -211 months ago

      A base 12 system is better then base10 objectively, because divisors are what make numbers useful and avoid decimals and fractions.

    • TheHarpyEagle
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      611 months ago

      There’s no real reason for it other than familiarity (and maybe some silly tribalism among certain people). I think if switching systems was as easy as flicking a light switch, most Americans would be fine with it. However, the mental effort it would take to unlearn the old system (especially for those in construction/carpentry and similar jobs) and the amount of tax money it would take to change signage just doesn’t seem worth it. Personally I’d like to see us slowly update signage to include both measurements and teach only metric in school, but it’s so far down the list of priorities that it’s unlikely to happen any time soon.

      • @rambos@lemm.ee
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        111 months ago

        I was mostly joking, but to use metric system you don’t have to do much, just learn it. Honestly, I wasn’t expecting I’ll change the world aynway haha

        Knowing both is useful and IMO it is the easiest for engineers and construction/production workers. For example here where I am, a lot of measurement tools have both units already (like measuring tape with meters and inches)

    • @NeatNit@discuss.tchncs.de
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      111 months ago

      Imagine that 120 cent is 1$ haha

      It’s not that crazy https://en.wikipedia.org/wiki/Coins_of_the_pound_sterling#Pre-decimal_coinage

      • £1 = 20 shillings (20s).
      • 1 shilling = 12 pence (12d).

      I’m big on metric but there’s nothing weird or wrong about non-decimal subdivisions. People have intuition about whichever system they’re used to. The true sin of so-called imperial units is that they’re ambiguous: a mile can be a nautical mile or a survey mile or any of these other miles. Volume is totally broken: US and UK have incompatible definitions for fl oz, ‘cup’ has many different definitions and is easily confused for “however much liquid fits in your cup” so is basically meaningless, and ‘gallon’ has three values that are wildly different from each other. If you follow a recipe from the other side of the pond, you better make sure you’re using the right foreign measuring cup.

  • @nexguy@lemmy.world
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    111 months ago

    Question, why do Europeans measure height in meters then centimeters(or just centimeters). It seems to make more sense to use decimeters then centimeters. Just one of those traditional things?

    • @eldain@feddit.nl
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      111 months ago

      Yeah, basically habit of using two digits precision whenever the meter is too big. Conveniently, the first two digits are centimeters. This comic is weird because our dude is using centimeters above 100 and adds millimeters and 10th milimeters to his length, must have been bald shaved at a precision doctor to get these numbers.

    • @NeatNit@discuss.tchncs.de
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      1111 months ago

      As someone else said, decimeters aren’t actually used by anyone. In fact, other than centimetres and decibels, I can’t think of any commonly-used unit that uses a prefix that isn’t a power of 1000. (kilo, mega, milli, micro, etc. are all powers of 1000)

      • Joe Cool
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        111 months ago

        As someone else said, decimeters aren’t actually used by anyone.

        Tell that to the Austrians. You can easily spot Austrian recipes and sizes by the use of dL and dm. In most of the rest of Europe you’d be right. Also maybe only older Austrians use it more frequently.

        • @NeatNit@discuss.tchncs.de
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          211 months ago

          Hadn’t heard of that - neither the unit nor the prefix. Turns out the prefix is actually hecto meaning 100, and are isn’t a commonly used unit. Thanks for that!

          • @uis@lemm.ee
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            311 months ago

            Used in agriculture. Are sometimes also called hundred/sotka. There is also deca- prefix.

            • Ephera
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              211 months ago

              Here’s my favorite German boomer humor, because it’s just so crude:

              Shirt which says "Liebe vergeht, Hektar besteht".

              Verbatim translated, it says: Love fades, hectare stays.

              Basically, it’s saying you should marry someone not for love, but rather for how many hectare of farmland they have, because in a long marriage, you’ll supposedly benefit more from the latter.

        • Ephera
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          111 months ago

          It’s not needed, because converting between them takes no effort.

          If someone tells you “50 centimeter”, you’ll know immediately that it’s 5 decimeter or 0.5 meter.

  • @PowerCrazy@lemmy.ml
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    911 months ago

    Do Europeans really give their height in cm? You’d think they short hand it like to like 1.7m or whatever since height is one of those things that doesn’t really need to be exact and will change by a cm or so based on the kind of shoes you are wearing, or wearing shoes at all.

    • @Nouveau_Burnswick@lemmy.world
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      11 months ago

      You can round it to 10’s or 5’s.

      My licence says 183 cm. I’ll usually say 180.

      Edit: so the cartoon guy would probably just say 190cm

    • @Linssiili@sopuli.xyz
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      511 months ago

      When using feet and inches, its fine to use precision of 1 inch as it’s much smaller unit than 0.1 m.

      If one says that they are 5’11" (180.34 cm), they can be 5’10.5" (179.07 cm) to 5’11.5" (181.61 cm) tall. That’s 1.4% variance.

      If using meters with one decimal place, and say they are 1.8 m (5’10.9"), they can be 175 cm (5’8.9") to 185 cm (6’0.8") tall. That’s 5.6% variance.

      Thus it’s not really viable to use only one decimal place when using metres as unit, so in many languages it’s easier to just say the length in centimeters compared to use two deeimal places.

      • @ElderWendigo@sh.itjust.works
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        11 months ago

        That also explains why the guy in the comic is being an ass or an idiot by listing his height to the nearest hundredth of a centimeter. A half inch or whole centimeter are more appropriate precisions for human heights. In your example even, a real-world measurement of 5’ 11" can’t just be blindly translated to 180.34cm because it adds precision that was not there in the 5’ 11" measurement unless otherwise specified. 180cm would be more appropriate but is still overstating the precision a bit. Using SI units without appropriate scientific notation and without respect to significant digits is kind of like watching a 3D movie with one eye closed.

    • @PostingInPublic@lemmy.world
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      1111 months ago

      176cm would be given as “eins-sechsundsiebzig” in German, literally translating to one six and seventy (yeah it’s backwards), which works exactly like currency.

    • Annoyed_🦀
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      11 months ago

      Not europe but yes, we do it in cm. Never heard people rounding up or down to the tenth though, so 164cm is 164cm, not 160cm.

      • @SomeoneElse@lemmy.ca
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        511 months ago

        I use a wheelchair on occasion - when I’m unwell and use my wheelchair I measure about 3cm taller than when I’m well and have been walking!

      • huf [he/him]
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        111 months ago

        continental europeans who know their height in feet must number in the hundreds! (my dad and i happen to be two because of Karl May reasons, but i doubt anyone else bothers…)

    • @GissaMittJobb@lemmy.ml
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      3811 months ago

      In my native language we say the equivalent of ‘one and eighty-five’ to refer to 185 cm of height, so basically we give it in meters.

    • @none@lemmy.world
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      2711 months ago

      Unless you happen to be 2 meters tall, yes, you would give your height in cm. You might round it, but you’d never say you’re 1.8m tall.

        • @ripcord@lemmy.world
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          811 months ago

          Never ask why never.

          Not when it comes to height measurement.

          …Not when it comes to height measurement.

        • Instigate
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          211 months ago

          Where I’m from, some people will still use feet/inches only for heights of human beings (weird, I know), but the most common response is in cm. For instance, if you asked me how tall I am I’d say 173cm, but I would say it like “I’m about a hundred and seventy-three” or “one-seven-three” - you don’t really have to say the units. Much the same as you’d say “I’m five foot seven” and you don’t need to specify “inches”.

        • zout
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          211 months ago

          Well, where I live, 1,85 m is less than average height, 1,90 m is more than average. It’s also a noticable difference, especially if you’re in the same height range.

            • zout
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              611 months ago

              The answer is if you round up to 1 digit, these heights are the same. So we give height in cm’s, because otherwise it’s not a usefull metric.

              • @PapaStevesy@midwest.social
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                -211 months ago

                Except numerous people in this thread say they and people they know give their height in meters. So I guess it’s not really never then, huh? Just saying, try not to be so absolute about something so inabsolute.

                • zout
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                  011 months ago

                  If they would really give their height in meters, they would almost all be 2 meters except for the very short people.

        • Ephera
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          111 months ago

          Well, if someone asks you about it, they’d like to hear a more precise number. They can easily estimate your height at a precision of 10cm.

      • @psud@aussie.zone
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        111 months ago

        1.8 is too imprecise. It includes both 1.80 and 1.89. do you think it’s fine to approximate your height to the nearest 4 inches?

        Why ever would a 6’ 2" person bother with the 2"?

    • @CapeWearingAeroplane@sopuli.xyz
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      11 months ago

      I guess its just because saying “one-seventy-nine” rolls better off the tongue than “one point seventy nine” or “one point eight”

    • Tar_Alcaran
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      11 months ago

      I just say “one sixty five”, and so do most people in the Netherlands (most use different numbers though)

    • @Ethalis@jlai.lu
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      2111 months ago

      In France it’s generally in meters with two decimals, so basically the same as giving it in cm

    • Vaquedoso
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      11 months ago

      Not European, but from a country that also uses the metric system. We give out our height in meters, as you said. Saying it in cm would be okey for medical reasons I suppose. Also there isn’t much difference in what unit you use, you just have to multiply/divide by 100, which is easily done in your head

    • palordrolap
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      611 months ago

      Do North Americans really give their weight in lb? You’d think they’d short hand it like to like 15 stone or whatever since weight is one of those things that doesn’t really need to be exact and will change by a lb or so based on the time of day and what you’ve eaten.

      • @PapaStevesy@midwest.social
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        811 months ago

        No, we give our weight in pounds instead of ounces because weight is one of those things that doesn’t really need to be exact and will change by a couple dozen ounces or so based on the time of day and what you’ve eaten.

        • palordrolap
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          411 months ago

          No, see, here ounces compare to millimetres. If height and weight fluctuate over centimetres and pounds, and they do, lesser units should be disregarded, right?

          • @PapaStevesy@midwest.social
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            511 months ago

            Stone isn’t a measurement in America, it’s inorganic material. The next-heighest commonly known weight is a ton, or 2000 lbs. Not very helpful.

      • @PowerCrazy@lemmy.ml
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        211 months ago

        A better example would be if europeans really gave their weight in grams. I don’t think they do, they use kilo’s cause they don’t really need the precision of a gram for something like that.

    • In German, you’d probably say 1 Metre 85 (Ein Meter Fünfundachtzig), or 1 85 (Eins Fünfundachtzig) to be more brief. I’m relatively certain that it very much differs from language to language, and probably regionally within languages.

    • @WoodenDing@lemm.ee
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      711 months ago

      Germans do go with meters when talking about their height but they’ll give you two decimal places.

    • @unwarlikeExtortion@lemmy.ml
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      811 months ago

      You always do it in cm wherever I’ve been. It’s either directly in cm, as in 172 cm or phrased in meters, as in 1.72 m. You cab say you’re around 170 cm tall or around 1.7 m tall, but the ‘default precision level’ is 1 cm

    • @bandwidthcrisis@lemmy.world
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      111 months ago

      When the metric system was introduced in the UK, the schools taught decimeters, decameters and hectometers, not knowing that no one would ever bother with those.

      • @Honytawk@lemmy.zip
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        211 months ago

        Even if they are used rarely, they are still named.

        So it is good to know they exist in order to explain the metric system.

        I was still taught them back in the day in Belgium.

  • @Reddfugee42@lemmy.world
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    1611 months ago

    Metric system:

    • Tons of great subdivisions
    • Continuously and exclusively use the same two or three prefixes for everything ever
        • @PowerCrazy@lemmy.ml
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          110 months ago

          All the prefixes are just base ten though, so who cares? They don’t add more subdivisions.

            • @PowerCrazy@lemmy.ml
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              10 months ago

              You said the metric system has tons of great subdivision which is objectively false. Prefixes in the metric system only multiply by 10, which by definition does not and cannot add additional sub-divisions. The point is that while the metric system is a useful system of measurement in very limited situations, the biggest advocates for it have no idea why they like it, and are ignorant of it’s deficiency’s.

              Let’s try to raise the discourse a bit. Divisors are absolutely the most important part of a human-centric numeric and unit system, and the metric system, being a base 10 system, absolutely sucks at that.

              • @Reddfugee42@lemmy.world
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                110 months ago

                Elaborate on how it’s “objectively false” that there are plenty of subdivisions, especially lots of subdivisions that aren’t frequently used.

                This should be good.

                • @PowerCrazy@lemmy.ml
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                  110 months ago

                  10 has 2 divisors, or “subdivisions,” that is not “plenty” that is 2. Thus it is false, objectively, to claim that 2 and 5 are “plenty.”

  • @davel@lemmy.ml
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    5611 months ago

    Making me divide by 12: that’s a paddlin’.

    > console.log(`${Math.trunc(74/12)}' ${74 % 12}"`)
    6' 2"
    
    • @Got_Bent@lemmy.world
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      611 months ago

      I never could understand why they made us learn multiplication tables up to twelve. This is why, isn’t it?

      • @LwL@lemmy.world
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        1011 months ago

        We only went up to ten in germany, so yea probably.

        Also my god those things are pointless.

    • @pingveno@lemmy.ml
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      411 months ago

      Now if only we used a duodecimal number system. Then I could divide by 2, 3, 4, and 6 while staying within the integers for as long as possible. And someone who is 6’ 2" would just be 6212"