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Joined 1 year 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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    4 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.










  • 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.


  • and your phone only has one number… right?

    Dual-SIM phones are a thing and have been for a LONG time. They’re not as common in the US (where I’m assuming you’re from given you aren’t familiar with dual-SIM phones) but even my S22 supports it, and I think even iPhones come with it stock now. A lot of people use two SIM cards for a multitude of reasons, and so many people have two numbers. Heck, some phones even support three SIM cards.

    Dig they bring out a PC client yet btw?

    It’s been out for a long time now. You have to set it up on your phone first but then you install the application on your computer, scan a QR code to link it, and at that point you can just disable notifications on your phone if you don’t want them.



  • I do too. To be clear, I did NOT mean that we could go without it today. What I meant was that if we didn’t have it to start with, things would’ve likely still developed albeit much more slowly.

    I’ll also preface this by saying I definitely slightly misread everything before and so my reply was kinda crappy