Recent content by qnt200

  1. qnt200

    I Symmetry of motion in the special theory of relativity

    I have attempted to address most of the issues you pointed out. However, it is evident that my reasoning still does not fully align with the special theory of relativity—perhaps precisely because of the introduction of acceleration into the analysis. In fact, I might be progressing towards a...
  2. qnt200

    I Symmetry of motion in the special theory of relativity

    I don't think that logic fits. Relative to what could the observers claim they were moving? In the context of the symmetry of motion, there are only two observers in space. Initially, they were at rest relative to each other, with no external reference point to orient themselves. It is clear...
  3. qnt200

    I Symmetry of motion in the special theory of relativity

    Thank you for your constructive criticism and helpful answers. Unfortunately, I feel that I have not fully received an explanation that provides the real logical reason for accepting the symmetry of motion in the special theory of relativity. Perhaps this simple example will better illustrate...
  4. qnt200

    I Symmetry of motion in the special theory of relativity

    In that case, observers can only determine whether they are in the phase of acceleration or uniform motion. They are unable to assert that one is at rest while the other is moving, or vice versa, nor can they make any other conclusions about motion beyond whether it is uniform or not. The reason...
  5. qnt200

    I Symmetry of motion in the special theory of relativity

    Your argument is strong, but it is also familiar to me. However, I am looking for a concrete and clear explanation because I am interested in research in this area. Perhaps you could suggest a work that critically addresses this topic. In principle, we can also ask what else might have been...
  6. qnt200

    I Symmetry of motion in the special theory of relativity

    Does the symmetry of motion in the special theory of relativity correspond to the real physical state? I assume that the principle of symmetry of motion leads to the following consequences: Observers in relative motion cannot definitively determine which one is "at rest" and which is "in...
  7. qnt200

    I Weak principle of equivalence (Galileo, Newton)

    Dale, jbriggs444 Thank you for your interesting answers and guidelines indicating to me the scope of classical physics, i.e., the inertial frame of reference. F=ma is only valid in inertial frames of reference. It is actually clear to me that the full answers, especially regarding gravity, are...
  8. qnt200

    I Weak principle of equivalence (Galileo, Newton)

    Thank you for explaining. It raises a few more questions for me about the logic of bodies in free-fall: It is known that gravitational mass = inertial mass (established with enormous precision). That is why we can talk about only one mass. Therefore m = mg = mi. In free fall, mg = ma, i.e., g =...
  9. qnt200

    I Weak principle of equivalence (Galileo, Newton)

    Many tutorials that explain the weak principle of equivalence (Galileo, Newton) do not clearly state whether the body is affected by the force of inertia during free fall as a result of the gravitational acceleration of the body. In other words, the question is whether, during the free fall of a...
  10. qnt200

    I The gravitational center of the Earth

    We know that gravitational forces are nullified near the center of the Earth, so the gravitational field's influence is not felt. Is it because of the Moon's gravitational field that the area of zero gravity has shifted away from the center of the Earth? If this is the case, this eccentric area...
  11. qnt200

    B Why is there now evidence of a lag time in the photoelectric effect?

    Unfortunately I’m not that far off with quantum mechanics yet, especially when it comes to the photo effect. It’s great that you directed me to take the first steps in that direction. If I'm not mistaken, today's quantum mechanics interprets the photo effect as follows (quote): "In the...
  12. qnt200

    B Why is there now evidence of a lag time in the photoelectric effect?

    This is not clear to me. According to this, it seems that the photoelectric effect occurs only at one (resonant) frequency or at specific frequencies, and not at a frequency that provides sufficient energy for the electron to jump out.
  13. qnt200

    B Why is there now evidence of a lag time in the photoelectric effect?

    Thanks for the answers. To summarize - a weak electron bond at the surrounding atoms is the cause of the absence of delay time. BS
  14. qnt200

    B Why is there now evidence of a lag time in the photoelectric effect?

    From: https://opentextbc.ca/universityphysicsv3openstax/chapter/photoelectric-effect/ "The photoelectric effect has three important characteristics that cannot be explained by classical physics: (1) the absence of a lag time, (2) the independence of the kinetic energy of photoelectrons on the...
  15. qnt200

    I If energy is relative, is the rest mass also relative?

    I thank everyone for the answers, which are extensive and in any case focused on the questions I asked. I am very pleased with the interesting answers. I think I got good answers to my questions. My apologies for the vague questions. Additional explanations of the question: Here I wanted to...
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