ould be between 0 
and 1.5. Since we are dividing by B in the equation, we might worry that as B heads toward 0, all 
hell breaks loose, but luckily 
</p>

<!-- LATEX fmeq38: \lim_{B \to 0}\frac{2}{B}J_{1}(B) = 1 -->

<img class="indented" src="pix/fmeq38.png" alt="lim1 case">


<p>and for all the other components
</p>

<!-- LATEX fmeq39: \lim_{B \to 0}\frac{2}{nB}J_{n}(nB) = 0 -->

<img class="indented" src="pix/fmeq39.png" alt="all cases">


<p>so, just as in normal FM, if the index is 0, we get a pure si