Reposting bc I dun goofed before

    • RoyalEngineering@lemmy.world
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      1 year ago

      This is the most succinct way I’ve heard metric time explained. Very easy to understand the conversion and the reasons to use it.

    • pHr34kY@lemmy.world
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      1 year ago

      It doesn’t explicitly say it, but that redefines the second to be 1/100,000th of a day.

      Doing that would break everything.

      That said, I wish speed limits were in m/s. It makes more sense to me.

      • Ultraviolet@lemmy.world
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        1 year ago

        Miles or kilometers per hour makes sense in the context of travel, you can very easily estimate how long it’s going to take to get somewhere.

        • calcopiritus@lemmy.world
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          1 year ago

          Ironically, km/h is better for estimation because hours are 3600 seconds. If an hour were 1000 seconds or whatever, it would barely take more effort to calculate with m/s

        • pHr34kY@lemmy.world
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          1 year ago

          I was thinking about estimating stopping distances and reaction times. The number of metres you cover every second becomes important then.

  • GluWu@lemm.ee
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    1 year ago

    And deci. What’s wrong base 10? Why aren’t you touching your decilitres.

      • Nakedmole@lemmy.world
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        1 year ago

        That´s because it in fact is. In Austria dekagramm is a common unit, abbreviated dkg or dag. In shops it´s standard to buy and label cheese and sliced cold meats in dag and in Austrian recipe books stuff like flour, cornstarch, sugar, butter and fat are measured in dkg.

    • MisterFrog@lemmy.world
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      1 year ago

      I know that some countries do! I’m pretty sure they use dL in Norway in baking.

      That’s the beauty, you can use this unit, and most people will immediately understand.

  • usualsuspect191@lemmy.ca
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    1 year ago

    Why would metric time still use the same seconds? Surely it’d be a different unit that was a nice multiple of 10

  • Trashcan@lemmy.world
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    1 year ago

    I’m sure the artist intended to be smart and use metric time as something silly.

    The problem is he used regular time.

    60 * 60 * 24=86400=>86.4 kseconds where k stands for 1000. Like kilo for 1000 grams. Kilometer for 1000 meters etc.

    The comic doesn’t make sense…

    • neonred@lemmy.world
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      1 year ago

      I cannot see what’s wrong saying a day consists of 86.4 ks. It’s a fact and it’s mathematically correct.

      • Rodeo@lemmy.ca
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        1 year ago

        If we’re redifining time, why do we have to keep the same unit size? Simply adjust the duration of a second to make exactly 100 ksecs per day.

        • GreyEyedGhost@lemmy.ca
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          1 year ago

          It’s ingrained and arbitrary. The only thing we’ve found so far for measuring time that doesn’t appear to be arbitrary is Planck time, which is so small it has no use in daily life. So if you have to use an arbitrary unit anyway, why make a new arbitrary unit? And while the second, minute, hour, and to a lesser degree month are arbitrary, days and years are not, they are just based on the unique circumstances of when we started observing our world in a scientific manner.

          • Rodeo@lemmy.ca
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            1 year ago

            So if you have to use an arbitrary unit anyway, why make a new arbitrary unit?

            Because whole point of metric is to use powers of ten.

            • GreyEyedGhost@lemmy.ca
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              1 year ago

              The SI unit for time is the second. It just happens to be the same length as the imperial second. Minutes, hours, days, weeks, months, and years are not SI units.

            • NegativeInf@lemmy.world
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              1 year ago

              12, 24, and 60 are highly composite numbers and easily divisible by more numbers than 10. Also, if you are doing that, go ahead and redefine degrees in a circle and all that jazz too. Go ahead.

              • Rodeo@lemmy.ca
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                1 year ago

                In the days of doing math by hand, that might have mattered.

                Let me introduce you to this little thing called a calculator.

              • calcopiritus@lemmy.world
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                1 year ago

                There has been a “metric” measurement of angles for a long time. The radian. It’s pi based instead of 10 based, but it makes way more sense than degrees.

          • Blue_Morpho@lemmy.world
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            1 year ago

            Plank time is arbitrary too. Plank time is the time it takes light to move 1 Plank length. It’s no different than any other time measurement other than it’s the shortest measurable unit of time.

            • GreyEyedGhost@lemmy.ca
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              1 year ago

              How is the shortest measurable amount of time it’s possible to measure with the physics of our universe arbitrary?

              • Blue_Morpho@lemmy.world
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                1 year ago

                It’s arbitrary in the same way measuring the time between photon absorption/emission in a cesium atom is arbitrary or the rotation of our planet is arbitrary.

                Picking the smallest is arbitrary just like picking a larger interval.

                In the cesium clock case, you count 9192631770 because it’s close to 1 second we already are familiar with and arbitrarily say 9192631770 transitions is defined as 1 second.

                For example Planck time is defined as 5.391247(60)×10−44 seconds. But what is that second? It’s the arbitrary 9192631770 cesium transitions we picked because it’s close to the second that come from Earth’s spin.

                • GreyEyedGhost@lemmy.ca
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                  1 year ago

                  Planck time doesn’t appear to be arbitrary, but a feature of our universe, hence the shortest measurable unit of time. It’s length in seconds is arbitrary because seconds are arbitrary. And seconds are arbitrary because the only non-arbitrary unit of time we have found so far is too unwieldy to use for anything but scientific purposes, and it’s very unwieldy for many of those.

          • lugal@lemmy.world
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            1 year ago

            How is a unit that varies in time less arbitrary than units that at least have a fixed length?

            • calcopiritus@lemmy.world
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              1 year ago

              Because the day and year have meanings. They are “the time it gets for the earth to make a full rotation” and “the time to come full circle around the sun”. They are of varying length, so we actually use time periods that are almost the real day and year, and call them day and year. These are fixed length.

              The second is arbitrary, because we just arbitrarily decided to split up the day in 24 hours, hours into 60 minutes and minutes into 60 seconds. Why 24/60/60? Kinda arbitrary.

              Now, does arbitrary mean it’s bad? I don’t see why. The meter is defined in a similar manner, but using multiples of 10 instead of 24/60/60.

              I know the meter and second have been redefined to be based on scientific phenomena and be independent from the earth, but their length has the same arbitrary origin. And as such, they are arbitrary.

              I don’t see what being arbitrary has to do with being a good or bad unit of measurement.

              • thecrotch@sh.itjust.works
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                1 year ago

                It was created by the Babylonians, who had a base 12 numbering system. It’s no more arbitrary than base 10, and in fact superior in some ways. 12 can be evenly divided by 2, 3, 4, or 6. 10 can only be evenly divided by 2 and 5.

              • lugal@lemmy.world
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                1 year ago

                I was referring to months which are arbitrary “to a lesser degree” but maybe I misunderstood the comment above mine

  • SlopppyEngineer@lemmy.world
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    1 year ago

    We have 24 hours in a day because the people that came up with the sundial lived around the equator (always half a day off light) and counted in base 12. 12 light hours and 12 dark is our 24 hours. You can count base 12 by using your thumb to count the bones in your finger. 4 fingers with 3 bones each gives you 12.

    It’s also why we have 60 minutes. They counted with their fingers on one hand to 5, with the other to twelve so you get 60. Why not 144? You make mistakes easily when counting to 12 with both hands.

    By now there have been many attempts to launch a different system for time keeping and calenders but it never took hold.

    • barsoap@lemm.ee
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      1 year ago

      You can count base 12 by using your thumb to count the bones in your finger.

      You can count to 1F on one hand without getting knuckles involved and 3FF on both, also without knuckles.

  • aname@lemmy.one
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    1 year ago

    You cannot really make all the time units a multiple of 10 to each other as a day, months and a year, for example, are defined by external factors.

    You could perhaps change seconds so a day would be exactly 100k seconds, which would make seconds slightly shorter than they now are but that wouldn’t really change the fact that a year is 365.25 days and that a month is either 27.32 or 29.53 days depending on how you measure it.

    • Klear@sh.itjust.works
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      1 year ago

      Let’s first establish decimal time, then we can talk adding thrusters to Earth to adjust its rotation…

    • Blue_Morpho@lemmy.world
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      A day is the spin of the Earth and a Year is the orbit of the Earth, but months are completely arbitrary because we (Western world) don’t use Lunar cycles for months.

      There’s no reason we couldn’t have 10 months.

      • aname@lemmy.one
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        1 year ago

        You could argue that years are also arbitrary.

        Yes, we follow orbital year and adjust our time to follow it, but the orbital year has meaning in anything except scientific world.

    • reinei@lemmy.world
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      Except a second is also already defined by external factors so making it shorter actually messes up ALL other SI units/compound auxiliary units…

    • Railcar8095@lemm.ee
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      1 year ago

      The MS has a solution for that. Days, years, weeks… are not part of the system. They are understood and the conversions accepted, but that’s it.