• ragas@lemmy.ml
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    2 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.

  • betanumerus@lemmy.ca
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    2 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.

  • SaltyIceteaMaker@lemmy.ml
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    2 days ago

    24 hours cause Egyptians split their sun dials and star decans into 12 parts each (probably cause 12 is divisible by 2, 3, 4, and 6) which the greeks later turned into equal length hours (before the length would change over the year)

    60 minutes due to Babylonian base-60 math

    12 hour format is just tradition at this point, but derived from the sun dials which only worked at day, so half the time, and the star decans which only worked at night, so the other half.

    pretty much every country except the US uses the 24h format on digitial clocks now

    also the dude in the meme was kinda right: the day will be divided into 12 segments. and the night will too. at least originally

    • /home/pineapplelover@lemmy.dbzer0.com
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      2 days ago

      This all originated from the Ancient Sumerians btw. They passed it down to Babylonians.

      Edit: A bit of history from what I learned from listening to Fall of Civilizations in the shower.

      The Ancient Sumerians invented this sexagesimal system because if you look at your hand, you notice 12 knuckles (this is obviously excluding your thumb, as that is used for counting each knuckle), and with your other hand you will raise a single finger for every time you finish counting past 12 knuckles on your left hand. So raising your thumb is 12, thumb and index is 24, and so on, until you reach 60.

  • Zamboni_Driver@lemmy.ca
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    3 days ago

    24 hour analogue clocks exist. I have a 24 hour watch which only revolves once per 24 hours. It’s a disadvantage though.

    The reason why clocks and watches display 12 hours at a time is so that they have space to show finer resolution of time. If you try to cram 24 hours onto a clock, it’s not easy to tell if it’s 12:20 or 12:30 at a quick glance.

    Most people are not too stupid to be aware of if they are in the first 12 hours or second 12 hours of a day, so they benefit from a watch with 12 hour timescale and finer resolution so that they can more easily see exactly what time it is.

    And for all the dummies posting about 12h vs 24h clocks. In the sense of saying that it’s 1pm vs 13:00. That’s not what this meme is even describing. This is about the physical layout of a clock or watch face.

    • CommanderCloon@lemmy.ml
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      2 days ago

      You could get a jump hour watch, meaning the hour isn’t a slowly moving hand but instead jumps from 6 to 7 with a jump, avoiding potential mixing up of hours, it would make it easier to read those 24h

      Like this watch

      Edit: The original watch linked is a weird one, it’s not a jump hour watch but instead it has a jumping dial to turn it from a 12h to a 24h, very neat! I can’t seem to find a 24h jump hour watch apart from this 30k breguet lol

    • riot@fedia.io
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      3 days ago

      I can’t believe this is the first I’m hearing of 24-hour analogue clocks! That’s so cool. But yeah, I see your point about it now allowing for very much precision at a glance.

  • s@piefed.world
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    3 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

  • icelimit@lemmy.ml
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    2 days ago

    We will also use 3 sticks to tell the time.

    Time is linear. But this will be circular.