Recent content by bob012345

  1. bob012345

    Quantum mechanics textbook?

    I'm not going to suggest a book because I doubt that is really the issue. I suggest finding a tutor for a few hours and see if things then make more sense. A tutor could just be a fellow student who seems to get it.
  2. bob012345

    I A new interpretation of Quantum Mechanics

    Ok, thanks. Just one more question. You said it doesn't depend on any particular interpretation of QM. But you have to assume QM itself right?
  3. bob012345

    I A new interpretation of Quantum Mechanics

    Do you mean the Aspect experiment? If so, doesn't that require some framework to interpret what the data means?
  4. bob012345

    I A new interpretation of Quantum Mechanics

    Are all experiments that suggest non-locality theory or interpretation independent?
  5. bob012345

    Is "Quantum Mechanics Demystified" a good book for a beginner?

    QM should not be left to self-study in my opinion. I recommend taking a course at a local college instead. I say that only based on my own experience taking QM in college and the fact that you then have an expert to ask questions of.
  6. bob012345

    B Deceptively simple geometry question on SAT test

    How can you first reach the starting point unless you are just starting?
  7. bob012345

    Tangent Angles for Lines of Force, Two Equal Positive Charges

    Thanks. I'm still confused as to what you mean. Is that answer 1/2 and is that in 3D?
  8. bob012345

    Tangent Angles for Lines of Force, Two Equal Positive Charges

    What then is the correct far angle in the 3D universe? Not sure how to get it from the posts #7 and #8.
  9. bob012345

    Tangent Angles for Lines of Force, Two Equal Positive Charges

    It's not worth going further until we at least know the correct version of the problem statement.
  10. bob012345

    Tangent Angles for Lines of Force, Two Equal Positive Charges

    But the problem is limited to a small angle near the pole, the center line connecting the charges, not any angle.
  11. bob012345

    Tangent Angles for Lines of Force, Two Equal Positive Charges

    I found the problem in my copy of H&R and it's completely different from the OP statement. I shall type it out. This is from the 1978 version of combines parts 1&2 In fig. 27-4 consider two neighboring lines of force leaving the upper charge at small angles with a straight line connecting the...
  12. bob012345

    Tangent Angles for Lines of Force, Two Equal Positive Charges

    Then the error is in H&R which I'm skeptical of. That figure is a cut through one plane and it looks the same in any plane around that axis. If you pick any two lines of the top charge in that figure there is some distance where the angle is half between the tangents.
  13. bob012345

    Tangent Angles for Lines of Force, Two Equal Positive Charges

    Doesn't it say tangents between any two lines? Question #7 in chapter 27 of my copy of H&R asks why the lines of forces from fig. 27-4 when extended backwards, appear to radiate uniformly from the center of the figure.
  14. bob012345

    Tangent Angles for Lines of Force, Two Equal Positive Charges

    True if this were a problem in Jackson but this is a HR problem which implies at far enough distance it looks just like a single charge of ##2q## and the lines are spread out evenly. Twice the lines over the sphere implies half the angle between any two lines over the single charge case. I would...
  15. bob012345

    Tangent Angles for Lines of Force, Two Equal Positive Charges

    Then assuming there are N lines around a single charge in the close case they are evenly spread around the sphere and in the far case N lines are spread evenly around a half sphere. In any plane cut through the sphere the angles between any two line's tangents should be half in the far case.
Back
Top