And using microwave screens is downright funny.
A microwave and "emp" pulse are two completely different things.
Those screens are simply metal, which reflect the microwave back into the oven. Although the "metal" in microwave doors these days is transparent and built right into the glass, the plastic "screen" is useless.
So rather than srounge around for old, early microwave screens, just use a piece of steel screen to block the evil emp waves, it's do the same thing- which is nothing.
So gamma rays don't travel that far from the source? First of all, what makes the EMP an EMP is created not by the weapon or the source...but the Compton Electrons.
2nd-How did Starfish Prime manage to damage electronics 1300KM away if it doesn't travel far from the source? This was 1962 and it shorted out (900 miles away) the electronics of the day. Image the same test today over Kansas.
Again...educate yourself.
http://www.globalsecurity.org/military/library/report/1996/apjemp.htm
http://www.fas.org/sgp/crs/natsec/RL32544.pdf
From the report:
"High-Altitude Electromagnetic Pulse (HEMP) is a near-instantaneous electromagnetic energy field that is produced in the atmosphere by the power and radiation of a nuclear explosion, and that is damaging to electronic equipment over a very wide area, depending on power of the nuclear device and altitude of the burst."
"HEMP is produced when a nuclear weapon is detonated high above the Earth’s surface, creating gamma-radiation that interacts with the atmosphere to create an instantaneous intense electromagnetic energy field that is harmless to people as it radiates outward, but which can overload computer circuitry with effects similar to, but causing damage much more swiftly than, a lightning strike.16 The effects of HEMP became fully known to the United States in 1962 during a high-altitude nuclear test (code named “Starfish Prime”) over the Pacific Ocean, when radio stations and electronic equipment were disrupted 800 miles away throughout parts of Hawaii. The HEMP effect can span thousands of miles, depending on the altitude and the design and power of the nuclear burst (a single device detonated at an appropriate altitude over Kansas reportedly could affect all of the continental United CRS-7 17 The Federation of American Scientists, “Nuclear Weapons EMP Effects,” [http://www.fas.org/nuke/intro/nuke/emp.htm]. States)17, and can be picked up by metallic conductors such as wires, or overhead power lines, acting as antennas that conduct the energy shockwave into the electronic systems of cars, airplanes, or communications equipment."
"To produce maximum coverage for the HEMP effect, a nuclear device must explode very high in the atmosphere, too far away from the earth’s surface to cause injury or damage directly from heat or blast. Also, HEMP produced by the nuclear explosion is instantaneous — too brief to start current flowing within a human body — so there is no effect on people."