posted on Jul, 22 2009 @ 12:13 PM
To put it simply, and its going to have to be simple because I have a somewhat basic understanding of electronics, its the lines of flux. Magnets for
example produce invisible lines of flux, exiting one pole and entering the other, like the magnetic field of the earth. When you cut through those
lines of flux with a wire you induce a voltage in that wire. That is how a basic generator works, and if you reverse it you have a basic electric
motor. In a basic generator you spin wire, wrapped around an iron core, in the field and you get AC electricity. The electricity is AC because wire
cuts through both the positive field and the negative field in one complete rotation.
AC electricity also creates such a field around a wire, as the current moving through it goes positive the field expands, when it goes negative it
collapses. If I put another wire close enough to that field, a slight voltage will be generated in it as well. This is how a step down/up or isolation
transformer works. This can also happen due to other items which generate such a field. That is why I can pick up bursts of cell phone activity when
they are close enough to my EEG telemetry equipment, the same way that a cell phone can cause noise in inactive speakers.
Of course the distance of the wire from the lines of flux, shielding, the power of the lines of flux, and the frequency (how fast they expand and
contract) controls how much voltage is induced in the nearby circuit. Cellphones put out a surprising amount of EMF flux when they seek/acquire a cell
tower, or when they receive an incoming call. This is the Radiation that is spoken of when people talk about how bad prolonged cellphone usage is for
you health. As a matter of fact, if I am on my house phone, and I put my active cellphone up to my other ear I can hear the interference in the house
phone from it being close to the cellphone.
Try this at home, take a normal cellphone, and a normal wireless house phone and turn them both on, call someone on the cellphone, then listen to the
interference on the house phone from the EMF of the cellphone...