Focusing x-rays

[Juan]

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

> 
> https://en.wikipedia.org/wiki/X-ray_optics