This is a discussion on What would a constant low EMP do to electronics? within the General Prepper and Survival Talk forums, part of the Survivalist, Prepper, Bushcrafter, Forest Rangers category; Originally Posted by sideKahr From what I've read, it doesn't have to be a particularly large yield weapon. What is more important is the construction ...
I would still hope we would pick that up - I forgot how extensively weather balloons were used in the past for C4ISR purposes, you'd think we still scan for it.
Ultimate retrofitting of tech - a tactical nuclear weapon and firing system on a hot air balloon - I would be pretty impressed.
As said, your question doesn't make much sense.
In an EMP, there are 3 distinct "phases" that happen after detonation.
The first is called the E1 component. This is the reaction of electrons in the atmosphere being struck by the tremendous gamma ray burst from the blast. These energy levels can reach 2 million electron volts immediately after detonation. By the time they reach the ground, they would be somewhere around 50K volts/meter (6.6 megawatts per square meter). This pulse hits earth about 10ns after the blast, and can last up to 20+ns. This is the part that knocks out fragile unprotected electronics.
The second is called the E2 component. This would be about the equivalent of a lightning strike, and would not produce much widespread damage, since the first pulse would have fried most of what this one would have.
The third is the... you guessed it, E3 component. This can last for several seconds, up to a few minutes IIRC, and would attack long lines of transmission, like long cables and antennas. The longer the run, the more potential energy it can hold, and the more damaging the pulse to anything connected to that line. This is where plugged in appliances could be affected, if they were not harmed by the first two pulse components.
The E1 part affects the upper atmosphere, and causes the air molecules to gain a negative charge. This ionizes the atmosphere for a time, and during that time, any additional detonations would NOT include an E1 component, since there would be no free electrons to transmit the energy toward the ground.
The E2 component, being similar to lightning, is something that *could* be maintained, in theory, by artificial means, but would require a serious amount of energy to sustain.
The E3 is only ever mimicked by solar storms, and would not be something a manmade contraption could sustain on any wide scale.
So, a sustained *anything* would be impractical at best, and impossible at worst.
Last edited by Kauboy; 09-09-2016 at 11:33 AM.
"Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats." - H. L. Mencken
I think you all have adequately answered our new little friend. On to more important things like what is PartiallyHuman missing?
" All great things are simple, and many can be expressed in single words: Freedom, Justice, Honor, Duty, Mercy, Hope" .Hidden Content
Give AlmostHuman a break. He probably just picked some EMP tid bits from this site and was asking what he thought was a reasonable question. We all had to learn about emp and it took a bit of time.
Last edited by 8301; 09-09-2016 at 01:36 PM.
Actually I was asking what effects an Electromagnetic Field would have on electronics within its range.
No one is going to break it down barney, as this is something that is real science with real theories - not how to turn on an Xbox. Read through the links I provided - Kauboy also gave an excellent in-scope and focused evaluation of what an EMP does - EMR is not far behind it, where a EMP will destroy unshielded electronics sustained, localized EMR will block out RF and if properly amplified may or may not short or otherwise disrupt other improperly grounded electrical systems and devices.