Recent content by Herman Trivilino

  1. Herman Trivilino

    High School Calculating an impossible reference frame as my own homework problem

    What do you mean by enter a reference frame? What are you trying to learn?
  2. Herman Trivilino

    High School Uniform thermal expansion of metals

    The thing is, without data to support that conclusion we have, well, no data to support it!
  3. Herman Trivilino

    High School Uniform thermal expansion of metals

    That's because you already have or others have done so for you. My point is that conclusions like that cannot be arrived at by reasoning alone. Experimental or observational evidence is a requirement.
  4. Herman Trivilino

    High School Uniform thermal expansion of metals

    There is no single reason that would be valid for everyone. You would need to design a question that would probe that issue. You would likely get a distribution of different reasons. This is the kind of thing physics education researchers (PER) might do to try to improve instructional...
  5. Herman Trivilino

    High School Uniform thermal expansion of metals

    My point is, they are a distraction. Doesn't matter how deep they are. The distance ##x## will increase. Put two marks on the disk and measure the distance ##x## between them. The value of ##x## will increase regardless if there are holes or cavities next to the points, between the points, or...
  6. Herman Trivilino

    High School Uniform thermal expansion of metals

    Every one-dimensional measurement increases by the same ratio. Put two marks anywhere on the disk and the distance between them will increase as described by ##\Delta L=L_o\alpha \Delta T##. The holes in the disk are a distraction.
  7. Herman Trivilino

    Graduate How valid is the Block Universe theory?

    When I'm doing spacetime calculations I'm using the same math used by block universe proponents, but I'm not thinking of the future as fixed. Am I using a different interpretation? Does it have a name?
  8. Herman Trivilino

    Graduate How valid is the Block Universe theory?

    So in 1905 Einstein didn't come up with a new theory called special relativity? Just a new interpretation of the already-existing Lorentz aether theory?
  9. Herman Trivilino

    Graduate How valid is the Block Universe theory?

    I suppose I'm not familiar enough with the Block Universe and the terminology. I don't think of future events as fixed, but some people do, and both viewpoints fit within the Block Universe AFAIK. I think of those as different interpretations. I think of Lorentz Theory as being a theory...
  10. Herman Trivilino

    Graduate How valid is the Block Universe theory?

    Rather than need I think it's an issue of desire. When we first encounter quantum theory we want to know the meaning of the main character ##\Psi##. But is there a corresponding character in relativity theory that leaves us with the same kind of desire?
  11. Herman Trivilino

    Graduate How valid is the Block Universe theory?

    There is no math in the interpretation! All the math is in the theory. An interpretation is just the way you think about the math when you're doing it.
  12. Herman Trivilino

    Graduate How valid is the Block Universe theory?

    Oops. I had to go back and edit that post about 3 times because I kept making mistakes. Too early in the morning maybe? Oh well, what's 6 orders of magnitude among friends? 🙃
  13. Herman Trivilino

    Undergrad First law of this universe

    Huhh? My height hasn't changed in decades whereas my mass has significantly. Although not during the trip I mentioned.
  14. Herman Trivilino

    Graduate How valid is the Block Universe theory?

    It can be really hard for a layman to determine the validity of a professional's website. Perhaps check the validity of the authors in their other writings by checking the references. This may seem like a very difficult task, but it gets a lot easier really fast as you start seeing the same...
  15. Herman Trivilino

    Graduate How valid is the Block Universe theory?

    A theory is used to make calculations. A theory is wrong if the results of its calculations don't match what we observe in Nature. The Block Universe isn't a theory. We can't use it to make calculations whose results can be compared to Nature's behavior. It is just a way of interpreting...