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schnurrito@discuss.tchncs.de to xkcd@lemmy.worldEnglish · 3 个月前

xkcd #3047: Rotary Tool

xkcd.com

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xkcd #3047: Rotary Tool

xkcd.com

schnurrito@discuss.tchncs.de to xkcd@lemmy.worldEnglish · 3 个月前
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Rotary Tool
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It was great until my thumb slipped and I accidentally launched my telescope into the air at Mach 8.

https://explainxkcd.com/3047/

  • moistclump@lemmy.world
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    3 个月前

    Stupid question… are these RPMs true??

    • intelisense@lemm.ee
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      3 个月前

      Everything in XKCD is based on truth. That’s what makes it so funny… to geeks, at least.

      Edit: God damn it, he put 72 instead of 78 RPM. I guess he does make mistakes after all…

      • SanguinePar@lemmy.world
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        3 个月前

        He also put 33 instead of 33 and ⅓. Get the pitchforks!

        • TheOakTree@lemm.ee
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          3 个月前

          Just a random thought, I always knew that 33 multiplied by 3 is 99 and 33 1/3 multiplied by 3 is 100, but I never considered that 33 is 99% of 33 1/3.

          • SanguinePar@lemmy.world
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            3 个月前

            Woah…

      • schnurrito@discuss.tchncs.deOP
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        3 个月前

        He’s made typos a few times in the past too: https://explainxkcd.com/wiki/index.php?search=typo&title=Special%3ASearch&go=Go

        • intelisense@lemm.ee
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          3 个月前

          I mean, technically, the record will play just fine. Everything will be slightly slower and lower pitched, but it’ll work. Think doom metal meets 1930s jazz.

    • felbane@lemmy.world
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      3 个月前

      Maybe I’m dense but shouldn’t the clock be:

      • H: 0.01667
      • M: 1
      • S: 60

      Yep, I’m a dumb, realized after a cup of coffee. Confirmed by the reply below.

      I think I’m just going to go back to bed and skip today

      • SoGrumpy@lemmy.ml
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        3 个月前

        Yes, you’re dense lol. The speeds are correct: the second hand that does one full Revolution Per Minute, the minute hand does one full Revolution Per Hour and the hour hand does one Revolution Per 12 Hours.

      • Rev3rze@feddit.nl
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        3 个月前

        Oh my god I’m full of caffeine and still wondered this same thing. In my defense it’s Friday afternoon and I’m tired.

    • KingRandomGuy@lemmy.world
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      3 个月前

      The sidereal telescope mount one seems to be right (approx 1 rotation per day).

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