Originally posted by: Blain
Originally posted by: taltamir
PS. blain, I noticed the EMP link in your sig...
The US currently has multiple layers of protection against that.
1. Short range anti missile missiles
2. Mid range anti missile missiles
3. Long range anti missile missiles
4. Ground based anti missile laser defenses (turns out it is more practical that shipping them to space, you can shoot a laser from the ground too)
5. Plane mounted anti missile laser defenses... (it takes a 747 to carry just one.. its currently HUGE and unwieldy and takes several seconds to blow up a missile, but it works and they are deployed, so, no laser fighters yet).
I noticed every measure you pointed to was a defense against an air based attack... :roll:
Are ground based attacks out of the question?
Can I store my system disconnected back-up HD in a faraday cage and be safe?
An EMP attack is basically detonating a nuke in the upper atmosphere...
When a nuke explodes it sends out a huge amount of energy as electro-magnetic radition...
Some of which is visible light, some of which is radio waves, some of which is all the other waves...
The EMP part is concerned with radio waves, when a radio wave hits metal it creates an electric charge (that is how radio antenna works), that means every bit of metal in your electronics near a nuke suddenly has a voltage, a high voltage, going through it, blowing capacitors and burning pathways and ruining the electronics.
In ground level detonation closeby stuff will be destroyed by the blast, slightly further out there will be a small ring of things that are not blowen up that will suffer EMP damage to electronics, the rest will fly out into space... that is because the earth is round and radio waves don't travel well through the ground.
But if you detonate a SINGLE large nuke (enough to wipe out a major city) in the upper atmosphere you can have the emp destroy every UNSHIELDED electrnoic in the entire north american continent... that is, US, mexico, and canada. Or a similarly sized area of land. The blast will be high enough to not blow things up, but the EMP will reach. it will also have a much larger fallout area, and fallout is more deadly then the explosion.
It is a fascinating subject and I have much more to say, but we shouldn't hijack the thread, if you are interested please make a new thread about the issue in the offtopic place and link...