Talk:Hyperfine structure

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[edit] Wrong units

ΔE ≈ ħ ? How can this be? ħ doesn't have units of energy. —The preceding unsigned comment was added by 69.137.135.226 (talk) 02:40, 15 March 2007 (UTC).

Yes, of course. I correct that expression to ~\Delta E_{\rm hfs}/\hbar~\sim~1~\rm [[GHz]].
Also, I add definition of ~\vec{B}_J~. Is it correct? Could LAk loho check this? dima 03:51, 4 April 2007 (UTC).

[edit] Vector Multiplication?

Under the Theory section, the equation:

a = \frac{g_I \vec{\mu}_{\rm N} \vec{B}_J}{\sqrt{J(J+1)}}

appears to contain a product of two vectors. If this is the case, in order to result in a scalar value (the fine structure constant), shouldn't this product be written as a vector dot product? Or is the product really of the magnitudes of the two vectors?

CosineKitty (talk) 14:23, 21 November 2007 (UTC)