Recent content by Billygoat

  1. B

    Finding Taylor Polynomial of Degree 4 for f(x)=sqrt(x) About a=4

    Well now just plug into the taylor series... f(x) = f(4) + f'(4)(x-4)+f''(4)(x-4)^2/2!+f'''(4)(x-4)^3/3!+... Hope this helps...
  2. B

    Lorandite Detection of Solar Neutrino Flux - Alshar's

    Yeah, dzogi, I expect it is nonsense although I've not seen the article, of course. There is a small amount of energy relesed on the absorption of the neutrino, but small compared to many nuclear processes.
  3. B

    Please explain the cause of the laser speckle pattern

    I expect you are talking about a speckle pattern... Look up laser speckle in Wikipedia...
  4. B

    Lorandite Detection of Solar Neutrino Flux - Alshar's

    A Tl atom can absorb a neutrino and through sort of a reverse beta decay become an atom of lead - Pb-205. The lead is stuck in the mineral and so if you can detect the few lead atoms generated over the geologic time you will have an idea of neutrino flux over geologic time... It isn't used...
  5. B

    Two State System: QM Explained by Sakurai

    The Feynman Lectures Vol III (Quantum) does an excellent job with the Stern-Gerlach approach. Very worthwhile read if your interested in such.
  6. B

    How are the formulas in QM derived?

    Roughly QM was derived from classical mechanics along this path (Very roughly...) Lagrangian CM --> Hamiltonian CM --> Poisson Brackets (Still CM) --> Commutator operators (Pretty much Quantum) --> Either Heisenberg or Schroedinger approach. There's much abstract math at each step of this...
  7. B

    Vector calculus book recommendation

    Here's two that have served me well: Mathematical Methods in the Physical Sciences by Mary L Boas, Wiley $ Sons (This one is not at a high level, but thorough) and Mathematical Methods for Physicists by Arfken and Weber, Elsevier Academic Press. (This one seems to come in several...
  8. B

    If the electrons are small tiny dipoles, how do then they refuse?

    electronic confusion The electron is a single point charge, and so does not have an electric dipole moment. However it does have a magnetic dipole moment - that is it does act like a little magnet in addition to its charge. This is related to its spin. Look up gyromagnetic ratios and g-...
  9. B

    When you touch something there isn't really any physical contact

    Well OK - If you were made up of neutral particles, but these particles could interact with each other some way besides electromagnetically so you could hold together, but if they didn't interact with the brick you are trying to lift, your hand would simply pass through the brick. Very ghost...
  10. B

    What Is Reflection & How Does Light Reflect?

    There are two issues in this thread: Reflection as in a mirror, and transmission through a transparent medium. Mirror reflection requires free electrons in the material - metallic surfaces are good (a mirror can be made by silvering a glass surface), because a metal has a 'gas' of electrons...
  11. B

    What are the two principles that prevent walking through a wall?

    If you are talking about walking through the wall and maintaining your identity then you are assuming no chemical interactions - your molecules are not changed. This means that Pauli exclusion, and HUP aren't important. The reason you can't walk through the wall is due to the electrostatic...
Back
Top