Introduction to EMP and Faraday Cages 

A discussion of homemade Faraday cages and how to conduct a simple experiment to test their shielding effectiveness against an electromagnetic pulse.

 http://www.youtube.com/watch?v=aMct99DiZak

EMP Trash Can Faraday Cage Testing in Lab

Tests are conducted to measure how effective metal garbage cans are at blocking high-frequency energy, such as that released by an high-altitude nuclear electromagnetic pulse (EMP). Tips are provided on how to greatly improve the shielding effectiveness

http://www.youtube.com/watch?v=y3S2KDuVxaU 

Blog won't post the videos so here are the links (Thanks Dagny!!)