CuriousRefugee

@CuriousRefugee@lemmy.ml

• ⁨Comment⁩ on ⁨Yep, it's me⁩ ⁨⁨3⁩ ⁨weeks⁩ 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.

• ⁨Comment⁩ on ⁨Yep, it's me⁩ ⁨⁨3⁩ ⁨weeks⁩ ago⁩:

  I recently taught my 11-year-old nephew “how planes fly.” A bit oversimplified, of course, but words like camber and lift and circulation were tossed around along with Bernoulli’s principle.

• ⁨Comment⁩ on ⁨Get good.⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:

  Oh wow, deep cut. I had that buried somewhere in the

• ⁨Comment⁩ on ⁨Anon reviews a game on steam⁩ ⁨⁨4⁩ ⁨weeks⁩ ago⁩:

  Outrageous! It’s terrible what people can force devs to do. I would like to apologize for my fellow human’s behavior personally; can you give me the name of the game and/or a download link? Or at least some screenshots, so I can, uh, be further outraged.

• ⁨Comment⁩ on ⁨Wordle⁩ ⁨⁨1⁩ ⁨month⁩ ago⁩:

  No thanks, I’m not into Pokemon

• ⁨Comment⁩ on ⁨A children's classic⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  I don’t think this is the original album cover. I remember that Weird Al was on the CD I had.

• ⁨Comment⁩ on ⁨Openblack is a an attempt to recreate lost god game Black & White in a modern, open source game engine⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  The song that the sailors sang in the original B&W is stuck in my head to this day. “Ohhhh, we’ve got this notion that we’d quite like to sail the ocean…”

• ⁨Comment⁩ on ⁨Are there any good critical thinking courses online?⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  They do have courses, but there’s also a lot of good quizzes to evaluate your critical thinking skills at ClearerThinking.org

• ⁨Comment⁩ on ⁨Behavioural Science⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  Did they? This was probably after the Tobias almost kills himself out of depression but then accepts his hawk body arc, so I can’t imagine why they thought it was okay to try and traumatize him again.

• ⁨Comment⁩ on ⁨Behavioural Science⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  Oh yeah, it was a mix of body horror, the brutalities of war, the unconscionable weight of leadership, and happy fun time seagull antics.

  The time limit was 2 hours or you got stuck. And that happened in the first book to emphasize “kids, this is real.”

• ⁨Comment⁩ on ⁨Behavioural Science⁩ ⁨⁨2⁩ ⁨months⁩ ago⁩:

  Oh god I think this is from the Animorphs book where they have to fight another human, not their typical alien enemies. They gave David morphing powers, but he turned/was evil, and so Rachel has to trap him as a rat and leave him out onto some abandoned island or some shit. Those books were brutal.

• ⁨Comment⁩ on ⁨Only Honk⁩ ⁨⁨3⁩ ⁨months⁩ ago⁩:

  I dropped my Netflix subscription and just spend hours a day on OnlyHonk. Don’t judge!

• ⁨Comment⁩ on ⁨GODZILLA SMASH⁩ ⁨⁨3⁩ ⁨months⁩ ago⁩:

  What about Gojira?

• ⁨Comment⁩ on ⁨Ironing⁩ ⁨⁨4⁩ ⁨months⁩ ago⁩:

  I don’t usually wear dress shirts to work except for big presentations, but how on earth does it only take you two minutes? Are you only counting active time ironing? Or ironing 10 shirts in one session and giving the per-shirt average?

  Start to finish, from getting out the iron, plugging in to start up, setting up my ironing board and laying out a shirt, waiting to heat up, ironing the shirt plus flipping it around and ironing again, then putting everything away after the iron cools down, it’s usually like 15-20 minutes for me. Maybe you can do something else when the iron is heating up, but it still seems like at least 10-15 minutes. Still a short enough period to not be a huge hassle once a week, but way too much to do every morning.

• ⁨Comment⁩ on ⁨This qualifies as a Sandwich⁩ ⁨⁨5⁩ ⁨months⁩ ago⁩:

  Dear Quora, I ate this sandwich but now I haven’t pooped in 23 days. Should I go see a doctor, or will my friend’s MLM elderberry quinoa enema rinse help?

• ⁨Comment⁩ on ⁨star gazin⁩ ⁨⁨5⁩ ⁨months⁩ ago⁩:

  Get cast in a cop/spy/sci-fi drama on TV, have an assistant pull up the image on a screen, then simply say “Enhance” out loud.

• ⁨Comment⁩ on ⁨rip harambe⁩ ⁨⁨5⁩ ⁨months⁩ ago⁩:

  Nah, it can’t be a gorilla. Reliable sources told me the sun is a deadly lazer

• ⁨Comment⁩ on ⁨[Poster] Official Character Posters for 'Boy Kills World' - 26th of April - Trailer in post body⁩ ⁨⁨8⁩ ⁨months⁩ ago⁩:

  Is this the sequel to “Boy Meets World?” Is Mr. Feeny in it as the wise old kung-fu master?