Useful Websites

http://www.colorado.edu/physics/2000/xray/making_xrays.html

http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html

http://web.mit.edu/smcs/8.02/

 http://www.hep.uiuc.edu/home/mats/wg2009.html

http://www.physics.adelaide.edu.au/~dkoks/Faq/