A wire with no current flow will have its charges in random directions.
They could be in the four compass points and an infinite number of other directions.
The electron spin producing the fields.
Charges in motion create field in all directions. Now we send a charge down the wire and it creates a unifying effect.
We can determine the direction using the right hand rule. A wave can travel at near the speed of light BUT the electrons are basically stationary. The electrons orient with respect to the wave and the magnetic field is strengthened (it is already there just in random orientation.). More later.....
No comments:
Post a Comment