I was reading a book about a hypothetical nuclear excange between the US & USSR and it got me thinking about. Electro Magnetic Pulse (EMP). I know what it is & basically how it works. But... 1. Can it be created other than with a nuclear weapon, like in Ocean's Eleven (2001)? 2. I know it damages/destroys electronics, but how exactly? 3. I know it can be shielded against, but with what materials? 4. With regards to computers and data, does it just stop a computer from working (power supply, processor) or does it also affect the hard drive (erases data) This is always my first stop for all sorts of information so I bet I can find some answers here. Thanks.