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InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)CU
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What book(s) are you currently reading or listening? November 12
  • I've been meaning to read Side Jobs - does it finally explain the sasquatch? Gotta do something while I'm waiting for the next book!

    I'm currently doing a re-listen to Name of the Wind and catching a lot of references I missed on the first read and first listen.

  • What is your star wars character of choice?
  • My man R2-D2. Took no shit from anyone, did what he thought was right, was around from the beginning, and survived practically everything. Plus was a loyal friend to Threepio even when he was acting like an idiot

  • What is your star wars character of choice?
  • 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

  • I don't make the rules
  • Yeah, more an aspect of where I've lived than everyone. Although I've yet to see a farm on the beach, which is what I really want. Drinking fresh milk while you watch the waves...the dream!

  • I don't make the rules
  • Yeah, but having done both, it's equally weird that people can just...go to the beach? Without making it a whole week trip! But then they can't just go to a farm for fresh cheese and eggs on a Thursday afternoon?

  • Time is a circle
  • 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."

  • Yep, it's me
  • 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.