Is there any chance that the electric field could skew these tests in anyway,and give a false indication of an A field causing the effect ?.
I only ask due to the fact that it is the electric field that induces a secondary,and not the magnetic field.
Brad
Electric and magnetic field are the same physical reality, the difference is only a question of observer. This is not easy to explain because there are two charge displacements to take into account, that of the electrons of the magnetic field source, and that of the test-charge that moves in this field. When the charges are at rest, their electric field (Coulomb field) is isotropic. When the charges move in a current, their field is compressed in front of them and strengthened transversely, effect of length contraction, it is no longer isotropic. Since only electrons move and the positive charges of the conductor are at rest, the deformed electron field can no longer systematically compensate the positive charge field. This anisotropy of the electric field is the magnetic field. Nevertheless, the conductor remains globally neutral, so that a test-charge at rest in this magnetic field is not subjected to any force. On the other hand, when this test-charge moves, it "sees" this difference between the electric field of the positive and negative charges of the source of the so-called magnetic field, and it is attracted or repulsed by the resultant of this electric field. For it, it's only an electric field. For the resting observer who sees the test-charge deviate, it is the magnetic field, and the force, the Lorentz force. The Lorentz force is F=q.VxB (vector product of the velocity of the charge and the field). By writing E=VxB, we find the Coulomb force F=q.E, where E is the electric field seen by the charge, and B is the magnetic field seen by the observer who also sees the charge at the speed V. So even without talking about relativity, the Lorentz force that reduces to Coulomb's force shows us that the electric and magnetic fields are the same physical reality, as well as the electric field from induction and the electric Coulomb field are of same nature also, contrary to what we often read, only their topology differs.
---------------------------
"Open your mind, but not like a trash bin"
|