Recent content by drnairb

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    Solving Nuclear Physics Revision Questions: Li and Be

    Modern Physics by Tipler/Llewellyn (4th ed.) has a good overview of nuclear physics. On pp. 516-518 they have a good discussion of nuclear stability. The short of it is this: for light elements (like Li and Be), the most stable ratio of nucleons is roughly 1:1. Both neutrons and protons are...
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    Write the Magnetic Field of a dipole in coordinate-free form?

    You can \TeX{}-ify your posts. It helps a *lot.* Here's the coordinate-free form: \vec{B}_{dip}(\vec{r}) = \frac{\mu_0}{4 \pi r^3}[3(\vec{m} \cdot \hat{r})\hat{r} - \vec{m}] where \vec{m} is the dipole moment, right? (I've always used \vec{p}.) Vector potential \vec{A} is...