Recent content by weirdoguy

  1. weirdoguy

    How good is Brian Cox as a science communicator?

    He has, so what? His pop-science is terrible. Most pop-science is terrible.
  2. weirdoguy

    High School Theory on universe expansion

    It is not caused by the dark energy whatsover. Accelerated expansion - yes. Expansion in general - no.
  3. weirdoguy

    Graduate Is the variation of the metric ##\delta g_{\mu\nu}## a tensor?

    Yes, and I don't know him (in person, since I was talking about people I know in person) and I still wouldn't call those tensors "the same object". But I know I am overly pedantic when it comes to those things.
  4. weirdoguy

    If Heat Is Motion, Why Isn’t All Motion Heat?

    It does, because you wrote: and this is not true. Mechanical energy is not form of kinetic energy, because that would mean that potential energy also is form of kinetic energy, since it is part of mechanical energy. And that's nonsense.
  5. weirdoguy

    Graduate Exploring Implicit Assumptions and Foundations of Quantum Mechanics

    That what you say is not true - superposition has nothing to do with inertial frames, and quantum physics can be perfectly done in non-inertial frames. I don't know what the rest of your post has to do with any of this. Besides: only dimensionless constants have meaning.
  6. weirdoguy

    If Heat Is Motion, Why Isn’t All Motion Heat?

    Yeah, if you learn english mostly by ear, it's easy to make that mistake.
  7. weirdoguy

    If Heat Is Motion, Why Isn’t All Motion Heat?

    Where did you get that from? Mechanical energy is something more than kinetic energy - it includes potential energy. Electric energy is also something different. EM radiation energy is electromagnetic energy, although I know some people call it kinetic in this context. Alpha/beta radiation...
  8. weirdoguy

    Is the quantum wave function a real object or a mathematical tool?

    My opinion: I don't care. See, that's why @PeterDonis wrote:
  9. weirdoguy

    Graduate Exploring Implicit Assumptions and Foundations of Quantum Mechanics

    How? Superposition means that equations are linear. You can do both QM and QFT in non-inertial frames, it's just tedious and gives almost nothing (besides e.g. Unruh radiation).
  10. weirdoguy

    RIP Andrzej Trautman (1933 - 2026), relativity and gravitational waves

    He studied at, and was affiliated with my alma mater and was supervisor of my supervisor, prof. Lewandowski. I had a chance to talk with him twice. I like his polish book on GR (written with prof. Kopczyński) and some of his lecture notes on differential geometry and group theory. Very sad news.
  11. weirdoguy

    Graduate What are the most fundamental entities in the SM and QFT?

    How, if they don't exist in other than SI systems of units?
  12. weirdoguy

    High School What is "motion theory?"

    Isn't plain old mechanics a "motion theory"? If someone says that something outside of physics explains physics better, then 100% this person is a crackpot.
  13. weirdoguy

    Valsalva and Eustachian tube

    It is forbidden here on PF, so it won't. But I have no idea about what you wrote, so that's all I can say 🙃