Focusing x-rays

Juan juan.g71 at
Tue Sep 22 20:24:53 PDT 2015

On Wed, 23 Sep 2015 02:59:18 +0000 (UTC)
jim bell <jdb10987 at> wrote:

> >   But only a dweeb doesn't know that X-rays cannot be focussed.
> > (With one very obscure exception not applicable here.  Find it and
> >get an "attaboy!". )

	Isn't it possible to focus any sort(frequency) of EM wave, at
	least in theory? 
> Its called Grazing Incidence


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