sorted by: new top controversial old
How can an airplane hit -47°c (-52°f) temperatures while flying over Southern Florida? in c/nostupidquestions@lemmy.world
[–] 10 points 1 week ago* (last edited 1 week ago) (2 children)

The adiabatic lapse rate is the reason. Its 2°C per 1,000ft or 3.5°F. If the plane is cruising at 30,000ft that's a temperature difference of 105°F from the plane to the ground.

Did some flying for awhile, gets cold up there.

Edit: Actually yeah, if the comment above that the plane was 37k-41k is correct. Let's says 40k for easy math, thats a 140°F temp difference. If the temp at altitude is -52°F then it would be 88°F on the ground. Math checks out!

  • permalink
  • fedilink
  • source
    •
    Windows 11’s Bing Wallpaper app now acts like adware, opening Bing when you click your desktop in c/technology@piefed.social
    [–] 6 points 3 weeks ago*

    No hate, but I actually liked a lot of the photos that they had selected. Lots of international holidays and events called out which was fun. Got worried for a second, since I still have it set as my current wallpaper.

    Then I giggled and remember to myself that I switched to Linux and KDE can pull directly from them without any of the spyware ¯\_(ツ)_/¯

  • permalink
  • fedilink
  • source
    •
    Is my cheap mirror compass I just got 'marked' wrong, specifically about the direction of travel and index lines? in c/nostupidquestions@lemmy.world
    LLMs are real, "AI" is fake in c/technology@lemmy.world
    Weird issue: OLED monitor prevents system booting, unless it's switched off during the initial boot, any ideas why? in c/pcmasterrace@lemmy.world
    [–] 1 point 2 months ago

    Now see I have the opposite problem after transferring to Linux lol If the laptop is connected to my thunderbolt 4 dock, the second it turns off.... it turns right back on. I have to unplug the dock to keep it off.

  • permalink
  • fedilink
  • source
    •
    Chat, is this accurate? in c/linuxmemes@lemmy.world
    Gorgeous women confirming rule in c/196@lemmy.blahaj.zone
    [–] 2 points 3 months ago

    No, its true. The door behind any S2 shop is locked not to keep people out but to keep the furries and cat girls in. Can't have them mixing with the regular troops. A hybrid would be too powerful to contain. The military has done all they can to prevent it but recently they had to create the spaceforce in a vein attempt to stop the spread of :3

  • permalink
  • fedilink
  • source
  • parent
  • context
    • Rule in c/onehundredninetysix@lemmy.blahaj.zone
    [–] 5 points 4 months ago*

    A student pilots license can be acquired by going to the local airport and asking for one. There is no testing or requirements to get one, just an application. Once your instructor is confident you can fly they can endorse you to fly solo.

    In the US you only need 40 hours of flight time to get a Private Pilot license. To fly commercially for a job, you need 190 or 250 depending on if you go to a college flight program.

    Apart of those 40 hours of flying, 10 of them must be solo hours. So this pilot has absolutely landed by themselves before.

    Its always surprising to learn that a hair stylist in New York state is required to take a 300 hour course, but a commercial pilot needs less flight hours.

  • permalink
  • fedilink
  • source
  • parent
  • context
    • This might even some violate international humanitarian laws in c/memes@lemmy.world
    [–] 9 points 4 months ago (1 child)

    Even worse. Given the boot, the sliver of woodland green MARPAT camo, and the ID card reader in the keyboard, this is some dumb ass Marine.

    Thats not just sushi dipped in ranch. Thats PX gas station sushi dipped in ranch.

  • permalink
  • fedilink
  • source
  • parent
  • context
    • Hired as a junior sysadmin but it feels like they actually need an IT manager... am I overreacting? in c/sysadmin@lemmy.world
    [–] 47 points 4 months ago* (last edited 4 months ago) (1 child)

    Holy shit I cant say that enough about Powershell. If you're managing Windows machines in a corporate environment, powershell will make you seem like a wizard.

    For OP, Check out the book "Learn Powershell in a month of lunches". Each chapter is setup to be read in 30 minutes with a 30 minute exercise. That book has saved my butt on more than one occasion with the skills I learned.

  • permalink
  • fedilink
  • source
  • parent
  • context
    • Is there room for Windows selfhosters? in c/selfhosted@lemmy.world
    Mormons outraged after Hegseth military policy no longer counts LDS as Christian in c/news@lemmy.world
    8
    Diagnosing a no boot / POST remotely (lemmy.world)
     

    Hi all,

    Ive got a reoccurring issue that has been effecting a couple of dedicated machines that operate remotely. Users are reporting that their systems are unable to turn on. Walking them through the troubleshooting, there is no issues with the monitor. Power is being applied, the system lights turn on. We can confirm the network activity lights on the LAN port and the router has negotiated a link speed. But if we log into the router, we see no packets coming from the PC.

    Now, the weird part. When the computer is shipped back, it magically starts working again. Ive tried running a memtest to see if maybe its bad ram, but it always comes back passed. I believe the issue is due to a multiport pci serial card. Sometimes if the cable is removed that connects to that pci, the system will boot. Other times, it completely kills the pc. Until of course it gets shipped back, then it will work again.

    Ive really hit a dead end with this issue. Im not sure how to diagnose a no post situation without physically being there. At the very least, I wish I could replicate the issue in person. Unfortunately, the issue is occurring with multiple computers and pci cards. Doubtful its a one off bad piece of hardware.

    If anyone has any experience troubleshooting a no post situation remotely or has had issues with pci cards, I'd really appreciate it!

    view more: next ›