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Joined 2 years ago
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Cake day: August 1st, 2023

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  • CuriousRefugee@lemmy.mltomemes@lemmy.worldMeme.
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    3 months ago

    You’re absolutely right. I just signed up on .ml because I was a reddit refugee and it was one of the largest instances, and it got the fastest updates. Like a year later, suddenly everyone’s talking about me like I’m part of some crazy cult. I bet well over half of .ml users don’t even come close to the extreme stereotype, but are considering going to another instance just so we don’t get bullied any more. It’s likely going to be a self-fulfilling prophecy.






  • I loved the SW card game as a kid, but everyone wanted to play Magic instead. I will admit, however, that the rules probably weren’t the greatest. You just played for that 1 game out of 20 where you actually managed to get the right cards out to blow up the Death Star or superlaser a planet, or had a Vader vs. Luke fight.

    Also IG-88 had a whole backstory in the EU (now SW Legends) where there were FOUR of him


  • If tomorrow we banned non-self-driving (NSD) cars, sure. But in most countries, grandfathering in old cars is going to happen for a while. Which means that self-driving and non-self-driving cars will have to share the road.

    I could see some transitions possibly. For example, on a 4-lane highway: “In 2027, lane 1 will be separated by a barrier and only allow SD cars. Lanes 2-4 will be for NSD cars only. In 2029, lanes 1-2 for SD. By 2033, NSD cars will be banned on this highway.”


  • CuriousRefugee@lemmy.mltoScience Memes@mander.xyzYep, it's me
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    4 months ago

    Yes, there’s a bit of a myth around Bernoulli’s principle (faster moving fluids have lower pressure) and how much it matters for lift in plane wings. It came up in the conversation because I was trying to describe what air pressure is in general, and made an analogy to a pan flute (he plays flute in band).

    Disclaimer: I’m an aerospace engineer, but I do not claim to be an expert on topic.

    But for plane wings, the myth is really that the air above the wing moves faster because the curved surface is longer. That’s pretty much dead wrong, but is still in tons of textbooks. The air above the wing does move faster, but it’s because of a bunch of complicated physics that to be honest, I don’t really understand any more. I may have even been taught wrongly in college. But the result is that there is a velocity difference on a cambered wing even when it’s flat, and thus Bernoulli’s principle does apply, and there is a pressure difference giving you lift.

    But that speed difference is mostly important at cruising altitude, when the wings aren’t angled, and it’s positively correlated with airspeed, so the thrust matters way more. When you’re climbing, the angle matters more. The camber (curvature) of the wing, the airspeed, and the angle of attack all lead to that pressure difference, along with a few other things like circulation, which is also caused by a sharp edge at the back of the wing. But everything kind of works together to generate that pressure difference and hence the lift that can combat gravity. It’s actually pretty hard to try and dumb it down without saying things that aren’t wrong.