• Admetus@sopuli.xyz
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    10 days ago

    I get the joke, but the sundials of ancient civilisations precluded clocks.

  • betanumerus@lemmy.ca
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    9 days ago

    Clocks are based on sundials. The little hand roughly follows where a shadow would be. The rest is just what people agreed on made the most sense.

  • s@piefed.world
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    10 days ago

    Keep it simple and just measure in terms of seconds since the Big Bang. The current time is 435,884,579,968,052,736 seconds, easy peasy

  • ragas@lemmy.ml
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    9 days ago

    The numbers on the clock actually make a lot of sense.

    12, 24 and 60 are highly composite numbers (https://en.wikipedia.org/wiki/Highly_composite_number).

    Imagine using numbers in a world where most people have no real understanding of fractions.

    That is also the reason why you see the same or similar numbers as common screen refresh rates. 24, 48, 60, 120 and 240.

    The 12 hour clockface design is that way because it is a similar design to that of a sundial, so people did not need to learn a new way to read the time. This also meant that for readibility reasons it was beneficial to only have 12 numbers.

    • __dev@lemmy.world
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      9 days ago

      Surely you mean common refresh rates like 23.976Hz (NTSC), 25hz (PAL & ATSC), 50hz (PAL & ATSC), 59.95hz (NTSC), 100hz (PAL+) and 144hz, right? /s

    • bstix@feddit.dk
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      9 days ago

      Everybody loves composite numbers, but I’m missing the point in which this is advantage in the context of time. The only situation I know of where time needs to be divided is in paid work, and in this case it’s always converted to base 10 money.

      • exasperation@lemmy.dbzer0.com
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        9 days ago

        The decimalization of money is its own fun history, with a lot of different countries undergoing their own transitions at different times.

        The Spanish dollar, which was the world reserve currency in its heyday, was divided into 8 reals (see how pirates used to refer to money in the form of “pieces of eight”) but issues with the supply of silver led to the introduction of the lesser real de vellón, which eventually settled at 20 to the dollar after over 100 years of uncertainty and confusion.

      • Rivalarrival@lemmy.today
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        9 days ago

        Geometry.

        The first clocks were sundials, which worked by putting a line on the ground. As soon as you comparing two different lines on the ground, you are doing geometry to represent time.

        When you start messing around with geometry, you need an easy way to describe the angle of an equilateral triangle. 1/6th of a circle, or 1/3rd of a line. Trying to represent 1/3 or 1/6th in base 10 is fugly. Trying to divide a circle into 10 equal sections is just as fugly.

        Dividing a circle into 6 equal sections is trivial: after you draw the circle with your compass, walk the compass around the perimeter. You have just inscribed a hexagon.

        You’re still missing the angle of 1/4 of a circle: the angles of a square. Those are pretty important in geometry as well. It’s fairly trivial to draw another 6 points between the first 6 on your circle.

        We use a 12-hour clock because of basic geometry. The 360-degree circle is the bastard child of basic geometry and a base-10 number system.

  • BenevolentOne@infosec.pub
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    10 days ago

    My pet theory is (circa 10000 BCE) that ‘houses’ and ‘hours’ are related words, the 12 hour clock matched the zodiac, each hour/house was 1 Assyrian ‘watch’ and they had no trouble day or night (constellations at night, sundial during the day), they were easy to build, easy to communicate, easy to understand and efficient.

    Then the Egyptians stole the technology (Circa 6000BCE) said ‘12 hours in a day? I got you bro’, fucked it up and it all went downhill from there.

    Feel free to quote me in your prize winning scientific paper.

    • Hoimo@ani.social
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      10 days ago

      How important is it to your theory that “hour” is related to “house” in… ancient Assyrian language? Because they’re completely unrelated in English, “house” coming from Germanic hus and “hour” coming from French ore. If we look at ancient Greek, the two are hoora for “hour” and oikos for “house”. I think English post-vowel shift has to be the first language where those two even sound similar.

      • BenevolentOne@infosec.pub
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        10 days ago

        Not central, just suspicious, but… this is ‘house’ as in astrological house as in the first part of the word ‘horoscope’, not house like a house you live in.

        My background in linguistics consists of a couple chompsky soft-science books and a love of tolkien, but if you actually know something and wanna chat I’d honestly love to dig in on this seriously. DM me.

  • altphoto@lemmy.today
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    10 days ago

    Alright, I’m calling a 4.1666666666666666666666666666 metric hour meeting to discuss this!

    The meeting might run to a full 5 metric hours.

  • IWW4@lemmy.zip
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    10 days ago

    It is wild how people refuse to use the 24 hour clock. It is so logical and easy. kind of like the metric system……

    • AA5B@lemmy.world
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      10 days ago

      It only solves a small part of the issue at the cost of less convenience and consistency. Propose a “metric” time that solves more of this issue problem and I’m all for it

      • groet@infosec.pub
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        10 days ago

        less convenience and consistency

        What? … seriously, which convenience and consistency are you talking about.

        24h only has one “inconsistency”, going from 23:59 to 0:00. How is that less consistent than 12am being after 11:59pm and 12pm being after 11:59am. Solves all parts of the issue except for one. Which is a lot better than the 12h system.

        • 8uurg@lemmy.world
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          10 days ago

          This has messed with me for the longest time. 24h just wraps around at 24, simple modulo 24 arithmetic.

          12h? The hour and am / pm wrap around independently, and hence I am always confused whether 12pm is supposed to be midnight or noon. Zero based would have made more sense (with x pm being x hours after noon…)

        • BakerBagel@midwest.social
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          10 days ago

          Why are the 60 minutes in an hour but 24 hours in a day? What functional difference is there between tne 12 and 24 hour clock? Are you showing up to your friend’s dinner party at 6am because you weren’t sure what time they wanted to start dinner? Are you unsure if your picnic is supposed to be right after midday or the middle of the night? Maybe your friend wanted to meet up for coffee and a bagel when you normally go to bed instead of right before you head off for lunch

          • froh42@lemmy.world
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            9 days ago

            Because 12 and 60 are great numbers to divide. You can take a half of it, a third and a quarter and still get whole numbers.

            Iirc the French did try decimal time at one time, it was not convenient.

          • groet@infosec.pub
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            10 days ago

            I asked why the am/pm system is apparently more convenient and consistent than the 24h system. I didn’t ask about 24h in a day and 60min in an hour.

            What functional difference is there between tne 12 and 24 hour clock?

            You need 2 numbers and 2 letters to accurately specify time in the 12h clock instead of just 2 numbers. Seems convenient to me.

            • BakerBagel@midwest.social
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              10 days ago

              You don’t need the am or pm 90% of the time because obviously a lunch date is happening sometime around noon, not midnight. A lunar eclipse or meteor shower isn’t visible while the sun is up, or a midnight snack isn’t happening in the middle of the day. Obviously if you are talking trains and flights, you need AM and PM. But people who are used to 12 hour time don’t want to figure out when 16:00 is, so they don’t.

              • AlexanderTheDead@lemmy.world
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                10 days ago

                If you know basic addition and you know how a 12 hour clock functions, then you know how a 24 hour clock functions. If you can’t figure it out, that doesn’t make it inconvenient, it just makes you incredibly stupid.

              • yetAnotherUser@discuss.tchncs.de
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                9 days ago

                Fun fact: Many countries use both systems actually.

                For speaking, it’s quicker to say something like: “The party starts at 8” instead of “The party starts at 20 o’clock”.

                For writing though, you would never use the 12 hour system.

        • froh42@lemmy.world
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          9 days ago

          Heh thanks for explaining it, I never knew if noon was 12am or 12pm. In German we say “11 in the morning”, “12 o Clock (noon*)” , and “1 o Clock (in the afternoon)”

          But typically we don’t say whether it’s am or pm, it’s clear from context if “i need to be in the work meeting at 9”

          Clocks, TV listings, my work timesheet read 24h times. We read 15:00 as “three” most of the time.

          Btw some software tools (my timesheet for work) differnciate between 0:00 and 24:00. I can work (theoretically) from 0:00 to 8:00 (8h in the night to morning) and from 16:00 to 24:00 (8 hours from afternoon to midnight).

          So 0:00 and 24:00 are the same moment but thought to belong to the next or previous say, respectively.