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Permeability and Permittivity of Free space versus particules

  1. Mar 15, 2009 #1
    We know for sure €0 and µ0 for free space.
    We know as well €r and µr for material
    Have theses values been calculated for stand alone particles like an electron, a proton or a neutron?
    Have somebody then connected theses values to an atom (of hydrogen for example) which is a combination of moving particules an free space ?

    Can anybody help?
  2. jcsd
  3. Mar 16, 2009 #2

    Vanadium 50

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    Permittivity and permeability are properties of continuous media. A single atom is not a continuous medium. What you want doesn't exist.
  4. Mar 16, 2009 #3
    No one knows what an electron is, let alone any material properties. I've seen people try to assign a higher permittivity to a sphere as a model. If I were to try such a model, I'd increase both permittivity and permeability proportionately so that Z is constant and c decreases. You could then view particles as local increases in space "density". In fact, it would be interesting to derive the radial dependency required to make an em wave "orbit" such a sphere.
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