https://xkcd.com/2897

Alt text:

When Pope Gregory XIII briefly shortened the light-year in 1582, it led to navigational chaos and the loss of several Papal starships.

  • Sibbo@sopuli.xyz
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    6 months ago

    Why not redefine lightyears to include a leap year every four years. Except when the number ends on 00, but only if it is not divisible by 400. Physics would be so much easier!

    • Kecessa@sh.itjust.works
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      6 months ago

      Well it’s in fact easy to calculate…

      To make it easier to visualize we’ll start with year 400. From year 400 to year 799 you’ve got a leap year every 4 years except for years 500, 600, 700 and including year 400, so that’s 25 leap years for the first century and 24 for the others.

      So you’ve got 25 + (3x24) = 97 leap years

      And 75 + (3 x 76) = 303 non leap years

      (97 x 366) + (303 x 365) = 146097 days every 400 years which means a year is 365.2425 days long on average.

      365.2425 x 24 = 8765.82 hours on average

      8765.82 x 60 x 60 = 31 556 952 seconds per year on average

      31 556 952 x 299 792 458 (speed of light per second) = a light year is 9460536207068016 meters long or 9460536207068.016 km long when adjusted to take leap years into consideration.

      • Sibbo@sopuli.xyz
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        6 months ago

        Okay, but now whenever you state one light year, it’s just a normal year. When you state four, it is three normal ones and one leap year. So four times one light year would not equal four light years.

        • Kecessa@sh.itjust.works
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          6 months ago

          You asked for a lightyear adjusted based on leap years, I provided the number. It’s a bit more than 365 light days and a bit less than 366 light days, it’s closer to the real distance covered by light during the time the earth goes around the sun.

          Edit: Don’t know why anyone would downvote me for providing what OP asked for in the first place, especially when their reply didn’t really make sense in the context…

      • nfh@lemmy.world
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        6 months ago

        There hasn’t been a Papal starship yet. I’m pretty sure he could Christen one, or delegate that authority to the bishop of the moon, an actual thing that technically exists.

  • MidRomney@lemmy.world
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    6 months ago

    Just wondering, but do people actually find xkcd funny? Are these comics supposed to be funny?

    • Opafi@feddit.de
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      6 months ago

      do people actually find xkcd funny?

      Yes. And I should know, I’m a people.

          • psud@lemmy.world
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            6 months ago

            I see people like you, and I am reminded that Lemmy has nothing to dissuade those who chase the largest negative score.

            Not saying that’s what you’re doing, just that if you aren’t, you should consider it since you seem good at it

            • suction@lemmy.world
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              6 months ago

              The day I start caring for internet points I want to be shot on the spot, please. I know, hard concept to grasp for low-to-middle educated Japanese culture aficionados.

          • thepreciousboar@lemm.ee
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            6 months ago

            You can try insulting me as much as you want, your elementary school comeback is not going to land

      • sleen@lemmy.zip
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        6 months ago

        If not for nerds you wouldn’t be typing this paragraph due to the internet being non existent.

        • suction@lemmy.world
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          6 months ago

          Citation needed for „the people who invented the internet were 100% nerds“

          • moriquende@lemmy.world
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            6 months ago

            Citation needed for your entire previous comment lmao. Most nerds are actually really nice people and lean left politically.

          • psud@lemmy.world
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            6 months ago

            It really does feel mainstream to come up with tech specs for a new comms technology, not the sort of thing that nerds* might do /s

            Tim Burners-Lee** worked in particle accelerators. Total jock****.

            * People excessively interested in tech

            ** Inventor of HTML - the web

            **** I’m old. The world is divided into nerds and jocks per Revenge of the Nerds (1984)

      • BeigeAgenda@lemmy.ca
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        6 months ago

        I think it’s hilarious that you promote nerd bashing on a platform where the majority is working with IT, just look how often posts from Programmer Humor trend.

        • suction@lemmy.world
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          6 months ago

          Is it „bashing“ though to point out the well researched fact that the new right wing demagogues and fascists are finding a lot of sympathy from nerd circles ? The „manosphere“, gamers, Japanese culture afficionados (because alleged racial purity), 4chan trolls, etc.

          Just saying „that’s not all nerds“ isn’t doing a good job of convincing anyone that they’re a problem and they didn’t use to be one. Something has changed.

          • Miaou@jlai.lu
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            6 months ago

            I think your average afd voter is more likely to bully nerds than befriend them.

            Academia, the place where the woke idealogy is propped up by… Querdenker nerds? Lol give me a break

          • BeigeAgenda@lemmy.ca
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            6 months ago

            What a depressing load of conspiracy nonsense you got hold of there. 🙄

            I really don’t want to get any links to pages that “prove” your point.

          • Sage the Lawyer@lemmy.world
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            6 months ago

            Fucking what?

            It is well documented that the more educated someone is, the more likely they are to vote for left-wing politics. https://www.pewresearch.org/politics/2016/04/26/a-wider-ideological-gap-between-more-and-less-educated-adults/

            Thus the right’s war on education. They want uneducated masses to inundate with propaganda, not critical thinkers.

            Also I think your definition of “nerd” is absurdly narrow. Dictionary says it’s someone who is either highly enthusiastic about a particular topic or someone who is boringly studious. That’s like, virtually everyone with a college degree. People tend to major in things they’re enthusiastic about. Or, if they’re just after the “best” diploma, they’re probably in the “boringly studious” category.

            You can be a nerd about anything, and I’d actually wager most people are a nerd about at least one thing. It’s not limited to the categories you arbitrarily selected to make your point (without any actual evidence presented, I might add).

  • BarqsHasBite@lemmy.ca
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    6 months ago

    Hmmm now that I think about this a light year would be (should be) based on an average year, not what we observe in any given year.

    365.2425 days. Different searches give different results but that’s what I’m going with.

    • callyral [he/they]@pawb.social
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      6 months ago

      idk, it feels more intuitive for it to be based on the mode (most common) year length (365) instead of the average year length (365.2425).

      • MBM@lemmings.world
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        6 months ago

        The boring answer is that in physics a year is just defined as the time it takes for the Earth to orbit the sun, they don’t care about calendars and leap years