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Joined 2 years ago
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Cake day: June 9th, 2023

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  • axsyse@lemmy.sdf.orgtoScience Memes@mander.xyzSpeed
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    9 months ago

    5 meters is definitely way too short for the chair swing ride. Look at the people in the seats. It’s definitely at least 10 meters.

    Assuming 10 meters and 100 km/h, that gives about 7.9 g. That’s in the range of what fighter pilots might experience and well beyond where most people black out, so that’s still definitely too high.

    Looking it up online, this is a pretty classic physics problem and the numbers you might see around it are closer to a radius of 12 meters and a speed of 13 to 17 m/s. Taking that as 15 m/s (54 km/h), that works out to about 1.9 g, which I can subjectively say feels much closer to the real value if you ever ride on one of these.

    So, the second one is about 1.9 g





  • I recently had a complaint with a website:

    “Users are having trouble scrolling!”

    My response:

    “Are they using the scroll wheel/directly scrolling with the touchpad, or using the scroll bar?”

    They were, of course, using the scroll bar. I am now somehow responsible for design choices made at the level of the browser, because browsers have decided that the scroll bar should be nigh impossible to use. Yippee.


  • axsyse@lemmy.sdf.orgtoScience Memes@mander.xyzSpearmint
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    11 months ago

    Evolution doesn’t really care about quality of life, so long as an organism still reproduces. If every organism in a species is in horrendous, absolutely unconscionable pain and suffering for their entire existence but always manages to successfully pass on their genes, then the species can absolutely be deemed “successful”. In a way, we have a symbiotic relationship with e.g. cows: even if we cause them mass suffering as individuals, as a species our relationship is mutually beneficial and that’s all evolution really cares about at the end of the day.


  • axsyse@lemmy.sdf.orgtoScience Memes@mander.xyzSpearmint
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    11 months ago

    There are billions of cows, chickens, etc. in the world. Purely by numbers, those species are incredibly successful. Yet, If not for humans finding them tasty and easy to manage, we would not have bred them to this degree and they wouldn’t have reached this degree of success. Somehow, against all odds, being tasty/something we want to eat has somehow become an incredibly valuable and successful adaptation.

    Evolution is absolutely wild, and this really drives home the fact that evolution isn’t about the individual’s likelihood of survival, but their likelihood of reproduction.











  • tl;dr: my PHEV does change gears when in EV mode, as weird as it sounds

    So, I drive a Hyundai Ioniq Plug-in Hybrid EV (PHEV). It’s a hybrid with a larger battery so you can plug it in and drive fully-EV on the battery for about 30 miles/50 kilometers or so. The freaky thing is that the EV motor is connected to the transmission, so it does switch gears sometimes and you can feel it when it does. Even freakier is that this also applies to regenerative braking: when you slow down from a high speed, you can sometimes feel it switching gears while you brake. That all isn’t too bad since it’s got a dual-clutch transmission and so it switches gears pretty quickly, but it can still be a bit freaky at times.

    Additionally: there are some people who have converted antique cars to EVs, but to save money they didn’t touch the transmission and instead elected only to replace the engine. They still have manual transmissions in them, though I suppose you could probably just find a suitable gear to leave them on 100% of them time. Still, you can, in principle, switch gears on them.