observantTrapezium

  • 7 Posts
  • 154 Comments
Joined 1 year ago
cake
Cake day: June 30th, 2023

help-circle










  • observantTrapezium@lemmy.catoScience Memes@mander.xyzSeconds
    link
    fedilink
    English
    arrow-up
    18
    ·
    2 months ago

    That may be relativists (they would actually measure anything in units of mass, with everything else defined through G = c = 1). Astrophysicists commonly measure mass in solar masses, long distances in parsec (or kiloparsec, megaparsec), short distances in solar radii or AU, and time in whatever is relevant to their problem (could be seconds or gigayears)



  • I’m sitting on an Aeron at work, it’s good, but I can’t in good conscience pay that much for a chair. I was recently on the market for a new office chair and extensively researched it. It really looks like it’s a hit or miss with every chair in every price range, and I was very seriously considering replacing my Hyken with another Hyken. I decided to go with the IKEA Markus and have been sitting on it for about a month. I’m only moderately happy with it, may even return it before the year is up although I’d hate doing it.






  • EM and gravitational waves are seen as analogous because as I wrote, they are produced by acceleration of charges and masses, respectively. The physics behind them is very different (described by Maxwell’s equations for EM and Einstein field equations for GW), but all systems that have waves in them (including sound in the air, waves on the surface of water etc.) can be approximated as linear for small perturbations, which means that they satisfy the wave equation at that regime.




  • I just had to coordinate an online meeting with some guy at a company, I had no idea where he’s based but he suggested time slots in EST (I’m in Toronto). I asked him twice if he’s sure, thinking he may be based outside of North America and doesn’t know that Toronto currently follows EDT which is GMT-4h, and he just responded “Eastern Standard Time”.

    And of course he actually meant EDT. Turns out he is based in North America, just dumb.

    Fuck timezones, but more than that fuck daylight saving time. You want an extra hour of sunshine after work in summer? Shift the work schedule, not the fucking clock!