I actually knew the answer when I first read the post (no I didn't use a search engine to find it as I worked in aerospace) but thought it would be nice to provide an authoritative source. -------- Original Message -------- From: Peter Gutmann <pgut001@cs.auckland.ac.nz> To: "wirelesswarrior@safe-mail.net" <wirelesswarrior@safe-mail.net>, "jdb10987@yahoo.com" <jdb10987@yahoo.com> Cc: "cypherpunks@cpunks.org" <cypherpunks@cpunks.org> Subject: RE: Focusing x-rays Date: Wed, 23 Sep 2015 02:37:06 +0000

wirelesswarrior@safe-mail.net <wirelesswarrior@safe-mail.net> writes:

...

Its called Grazing Incidence

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

Ten out of ten for knowing what it was, but minus several million for using Wikipedia as the reference.

Peter.