• intelisense@lemm.ee
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      1 month ago

      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…

    • felbane@lemmy.world
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      1 month ago

      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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        1 month ago

        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.

  • Tar_Alcaran@sh.itjust.works
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    1 month ago

    Wow, dental drills spin stupidly fast. I never realized they’re jamming something in my mouth that makes a turbopump seem sluggish, and that makes the scariest laboratory centrifuge I’ve ever seen blush in shame.

    • TheOakTree@lemm.ee
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      1 month ago

      Big centrifuges are quite scary. Think of how much mass they are moving at those speeds. In comparison, a small drillbit turbine being rotated by compressed air seems less scary.

      • Tar_Alcaran@sh.itjust.works
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        1 month ago

        The scariest lab centrifuge i’ve personally seen went to something like 100k rpm, and 800,000 g. It’s basically a cartoon safe with a piece of lab equipment inside, because when something fails at 800,000 times the force of gravity, it’s going to end up outside the city borders, or inside the next building over.