observantTrapezium

  • 2 Posts
  • 21 Comments
Joined 1 year ago
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Cake day: June 30th, 2023

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  • observantTrapezium@lemmy.catoScience Memes@mander.xyzSeconds
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    1 month 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)


  • Astrophysicist here. Yes, space is crazy, but interesting things to keep in mind:

    1. The size of a star is determined by something called the photosphere. With those extremely massive stars, you can be hundreds of millions of kilometres “inside” and not yet know it.
    2. Similar story with supermassive black holes, from the perspective of an astronaut falling in, they wouldn’t really be able to tell when they cross the horizon because the tidal forces there are very small (they will inevitably fall towards the centre and get spaghettified at some point)


  • You can’t successfully use a home email server.

    Mostly true (server can be home but using the ISP network directly probably won’t work)

    You can’t successfully use an email server on a (cloud) VPS.

    Bullshit

    You can’t successfully use an email server on a bare metal machine in your own datacenter.

    Bullshit

    As such, it is my distinct displeasure to declare the death of SMTP. The protocol is no longer usable. And as we can see, this devolution occurred organically.

    Bullshit















  • I joined WhatsApp after many years of holding out, there was simply no other practical way to keep in touch with many people. The ways I mitigate the privacy concerns are:

    1. I got an international eSIM, for the purpose of cheap roaming abroad but since I now had this extra phone number not tied to my identity, I used it for WhatsApp.
    2. I installed WhatsApp using Island so it has access to just the contacts in the “work profile”, that is, just people who have WhatsApp anyway.