victor1985 wrote:So basically what is about electronic warfare? Asvlong i know electric current is about moving of electrons.
An electrical current is really just a mass-movement of electrons, a big sea of them. The greater the amount of them passing some point in the circuit per secound, the greater the current (current is measured in amperes; 1 ampere = 6.241×10^18 electrons passing through per second).
A total electrical charge equivalent to that of 6.241x10^18 electrons (or protons), is called a coulomb.
Therefore you can say that an ampere - is equal to 1 coulomb of charge passing through per second.
Because every atom can be negative or positive (depending which is higher in number electrons or protons).
I also found recently that negative or pozitive atoms are called IONs
An atom with an electrical charge, is not called an atom, it is indeed called an ion as you have said.
deficite of neutrons are called ISOTOPHE.
Isotope, not Isotophe.
Indeed, but this has nothing to do with electricity. More nuclear physics, radioactivity and so on.
I try to understand right now how a battery works and how a EMP works( as far i understand is about sending a huge amount of electrons in the electric circuit).
There are configurations in which lattices of atoms, arranged as a big structure, are able to have free outer electrons, that are free to hop from one atom to the next, so long as all the other electrons of all the other atoms are also attracted to go the same way and at the same time.
Such a material is called a conductor. All metals are arranged this way. So is graphite (a form of carbon).
This behaviour generates a current; that sea of electrons starts moving - and this is what electricity is.
What causes this behaviour - is an electromotive force (from a moving magnetic field, or towards the positive terminal of a battery lets say). Such a force can described in terms of voltage. The greater the voltage - the more powerful it is; the more the electrons will be compelled to move.
A battery basically works via some mechanism that gives one of its terminals a positive charge relative to the other one. Because the two terminals have different levels of charge, a voltage manifests itself, that starts moving current across some conductor (wire) connected to the terminals.
Typically this mechanism is a chemical reaction - which causes the accumulation of electrons at one of the terminals - leading the other terminal to be positive relative to the one where the electrons are partying at.
An EMP pulse, like that coming from a nuclear explosion - is basically just a very short, but very strong magnetic field that moves at the speed of light. When it reaches any conductor; it gives the free electrons of that conductor a HUGE spike of energy/momentum.
Now, this doesn't really cause much of a current - because the EMP burst is traversing at approx 3,000,000,000 metres/second while a typical conductor or wire might not be longer than a few metres long along the axis of movement of the EMP burst. If you happen to be touching some metal bar or whatever when the pulse passes over, you won't be harmed - the voltage is very high but the current (electrons per sec, remember) is very minor owing to the extreme shortness of the phenomenon.
Current is what kills you really, not so much voltage.
However, for any sort of working electronic compoments, with a current already moving; that EMP burst will cause a huge spike in that current, however short, and this will easily be enough to burn out all the sensitive microelectronic components, switches, etc... that are rated for much lower charges and will simply melt if you expose them to a many-times higher charge even for a nanosecond.