• 0 Posts
  • 73 Comments
Joined 2 years ago
cake
Cake day: June 9th, 2023

help-circle
rss

  • Opening a new line of credit is only a temporary hit to your score. Multiple cards in a short time will be a bigger hit, but it’ll eventually pass.

    Most if not all of those cards offer a free credit report that could tell you how much of an impact this had on your score and how quickly it improves. If you have another existing card (don’t sign up for another one) you may be able to see the change to your score once these hard credit pulls hit your credit report.

    If not, wait a month or so and use one of your free annual credit reports. You get one report per year from each agency for free, with no consequence to your credit score. There’s 3 credit agencies, so in principle you can check your credit every 4 months for no cost.


  • The deep sea detector in the news uses Cherenkov radiation to detect the neutrino.

    A neutrino can interact with the nuclei in water molecules (so hydrogen and oxygen nuclei) and produce a charged particle like an electron or a muon. The outgoing particles carry the energy of the incident neutrino, so they can be emitted at a speed greater than the speed of light in the liquid medium.

    Note this is much less than the speed of light in a vacuum, so this isn’t breaking any physics. When charged particles (electrons, muons) pass through a medium at speeds greater than light in that medium, they emit Cherenkov light in a forward cone.

    The Cherenkov light is analogous to the shockwave formed when breaking the sound barrier. Since it points in the direction the particle was traveling, you can detect the shape of the light cone with a large array of photon detectors and reconstruct the direction of the neutrino.













  • My employer has a “buy American” policy that kicks in for purchases over a certain dollar amount. To get an exemption, you need to identify 2 domestic options and state why they aren’t sufficient.

    Recently I needed to replace a module in an existing system that happens to be made by a non-US company. There is literally no valid alternative - only this one company makes the modules that are compatible with each other.

    So I had to identify 2 American made products that were vaguely similar and state why they didn’t meet our specifications. Though “Vaguely similar” is a stretch - it was equivalent to explaining to someone why you can’t buy AA batteries to replace a car battery.





  • I’m gonna echo what others have said here. The mastodon signup process is too complex, and searching for instructions just leads to “what is the fediverse and/or activitypub” explainers.

    I created a mastodon account a few years ago and it was my first introduction to the fediverse. It was frustrating and I only persevered because I REALLY wanted to replace twitter.

    Once I got it set up, I realized that no one who I followed on twitter was there. My feed is currently like 2 people, plus a bunch of dead accounts from people who dipped their toe in but didn’t stay.

    Joining Bluesky was simple, and there were already a bunch of accounts I wanted to follow. The recent influx has increased that, and it feels a lot like old school twitter without the nazis.

    People originally joined twitter (and stuck with it for so long) because that’s where everyone else is. Mastadon is too clunky join and use, so people aren’t.