• 0 Posts
  • 86 Comments
Joined 1 year ago
cake
Cake day: July 19th, 2023

help-circle







  • I’m often reminded of a SpaceX render they put up on the 'Tube back when they were still working out the reusability thing. Commenters had a lot of questions about how the particular flight plan impacted on their fuel budget. And so, Elon himself waded in with the answers. Except he was talking about the dollar price it cost to buy the fuel. He was like ‘why are you worried about fuel, it’s not that expensive, guys’ because he didn’t understand the questions. He didn’t understand why the amount of fuel and the mass of the fuel would be significant to anybody. Guys, I think he doesn’t understand the rocket equation. He doesn’t understand the central problem of rocketry. I think the guy might be full of it.







  • I find Wolfram Alpha helpful for this sort of thing. It said

    13 TeV ≈ 13 × approximate kinetic energy of a flying mosquito ( ≈ 1.6×10^-7 J )

    So absolutely tiny on everyday human scales. Credit to astronomy that they can even detect it over something as large as the earth’s atmosphere.


    Oops, I’d assumed that was the total energy delivered to the atmosphere, but it’s the energy per photon, and they detected at least 140 of them (so there were probably a lot more unobserved). Who would have thunk to read the article before commenting?






  • octoperson@sh.itjust.workstoMildly Infuriating@lemmy.worldThis Captcha
    link
    fedilink
    English
    arrow-up
    4
    arrow-down
    2
    ·
    1 year ago

    Most pictures lack snow. You’d expect the interior of a room to lack snow. Lack of snow alone does not communicate anything unless it’s in a context where you’d normally expect there to be snow.

    If I was a visual designer, and I was tasked with providing a picture to represent warmth, I might choose, I don’t know; hands in mittens clutching steaming mugs of cocoa, a cat snoozing in front of a roaring fire, or what else? Welcoming light shining from the windows of a house in a snowy landscape! If I submitted a nondescript photo off of a real estate listing, and said “look bro! No snow”, I’d be looking for a new job.


  • Only number 3 conveys the concept of warmth to me. A wintry scene contrasted with orange tinged light visible through house windows is a classic trope to evoke warmth and cosiness. The interiors are undoubtedly a physically higher temperature at the location of the photographer, but that is not being communicated visually by the picture.

    What “of one type” means, I have no clue.