Recent content by Quattro

  1. Q

    NMR, Nuclear & Electron magnetic moments

    Ok, quick after thought. Does the solution lie in the fact that although the magnetising field acts on both moments, subsequent NMR pulse routines etc, are at frequencies so as to only act on the nuclear moments? The magnetic dipole moments of nucleons and electrons are significantly...
  2. Q

    NMR, Nuclear & Electron magnetic moments

    I have got myself very confused. I am trying to understand Nuclear Magnetic Resonance but am running into issues. The basic idea of NMR, resonant excitations between Zeeman split nuclear energy states, I understand. The semi-classical picture of precessing moments also makes some sense to me...
  3. Q

    How Does Recoil Affect Photon Emission Frequency in Special Relativity?

    Yeah, thanks George, i did get their in the end (see my last post). The process in going from what i got initially to including the defined e was a bit messy, but hey, and answer is an answer. Thanks again
  4. Q

    How Does Recoil Affect Photon Emission Frequency in Special Relativity?

    Thanks George. Im on a bit of a high at the moment after finally solving another similar (but 5 mark) question in this same assignment i was stuck on. I'd say this thread is at least partially resposible, that total relativisic energy formula really is useful! But ill give this question...
  5. Q

    How Does Recoil Affect Photon Emission Frequency in Special Relativity?

    Doesn't the rest mass have to decrease slightly to produce the energy for the photon?
  6. Q

    How Does Recoil Affect Photon Emission Frequency in Special Relativity?

    Thanks for the input guys, but I’m still having trouble. I now see the significance of the E^2=p^2c^2+(m_0c^2)^2 formula and used it to setup the system of energy and momentum you introduced Dick: Energy: E_0=E_1+E_\gamma E_0=m_0c^2 E_1=\sqrt{(m_1c^2)^2+p_1^2c^2} E_\gamma=p_\gamma c...
  7. Q

    How Does Recoil Affect Photon Emission Frequency in Special Relativity?

    I’m having some trouble with a question from my special relativity assignment. It relates to the frequency of a photon emitted from an atom which then subsequently recoils. The atom has initial rest mass m0, and loses rest energy ‘e’ in the emission (“e is the difference between the rest...
  8. Q

    Question about light waves (and speed of)

    Hi, I have recently read a book called E=MC^2 (David Bodanis). It is an interesting book that goes over the history of the famous equation, but it left me with a few questions. The story goes into the issue of light being a combination of electric and magnetic fields, but doesn’t go much...
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