Recent content by Oldfart

  1. O

    Do you think there are things forever beyond our grasp?

    A question that some of these posts seems to raise is: Might some animals be capable of understanding concepts which we humans cannot grasp? For instance, could it be that a microbe could develop ability to visualize five dimensions because this skill enhances its ability to survive?
  2. O

    Question about the Limitations of Physics

    Who gets to decide if a question is philosophical or not? In the hunt for the Higgs Boson, were we not trying to see if the HB actually exists?
  3. O

    What intinitally got you interested in physics?

    No, I still like it, which is why I an here. After freshman year I switched to ME, fearful of the need for graduate school to make anything of a physics degree. Never looked back.
  4. O

    What intinitally got you interested in physics?

    I liked it because it was easy in high school.
  5. O

    I had a colonoscopy today

    You got that right! Not doing that again!
  6. O

    I had a colonoscopy today

    Ha Ha! I had a colonoscopy today and you did not!!
  7. O

    Time in the eye of a photon

    Andromeda is not "sometimes visible" but rather is easily visible in clear dark skys if you know where to look. You'll see a faint fuzzy patch of light.
  8. O

    Drop a ball - where does the energy go?

    Well, we won't really know until some idiot tries it, right? Maybe I'll give it a shot tomorrow...
  9. O

    Drop a ball - where does the energy go?

    Hmmm... What if you lightly soaked the paper in alcohol first? Anyone want to give that a try?
  10. O

    Drop a ball - where does the energy go?

    That's interesting, dauto. If I'm lost in Alaska and about to freeze, and find two hammers and some paper, is it possible that I could start a fire to save my life?
  11. O

    Relatavistic disc appearance

    Thanks. Pervect, I think I'm now starting to get it! Seems now that there are two types of distortion: (1) Everyday distortion due to centrifugal forces acting on the spinning object, something that even an old ME can understand, and (2) Distortion due to light delays like you mentioned. So to...
  12. O

    Relatavistic disc appearance

    Thanks to all for your replies! Unfortunately, I've been trying to study the Noether-Herglotz theorem and your other comments without much luck, the math exceeds my paygrade, so to speak, I'm an ME, class of 1958. But I appreciate your efforts, really do! For whatever it's worth, I envisioned a...
  13. O

    Relatavistic disc appearance

    If I had a spoked disc made of unobtainium that could be spun up to .9999c outer rim speed, what would it look like as compared to the disc at rest? Assume I can photo the spinning wheel with an ultra fast camera.
  14. O

    Like what IS energy? relative to force

    But the table will be locally accelerated and deformed in way of the book, the table legs will be deformed. the floor in way of the table legs will be deformed, etc. This is easier to visualize if an anvil is placed on the table, but in any case energy is transferred to make these things happen...
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