Chapter 4: Dependent radiations of electric field and magnetic field

Chapter 4: Dependent radiations of electric field and magnetic field

The Hertz experiment was generally thought to be verification to Maxwell curl theory, the fact is opposite to the above mistake thought. Maxwell’s prediction about electromagnetic wave is a great science improvement to Hertz experiment. The Hertz experiment is just the experiment interpretation of dependent radiations of electric field and magnetic field. Just as Lorentz said motion of electric charge was the origin of all electromagnetic fields, that is to say, field can not produce field.

Sphere face symmetric distributed electric field is firstly introduced and then based on the timing electric field of the polar capacitance, it is verified that the linear timing electric field is dependent radioactive and the trigonometric functions timing electric field as well as sine-cosine function timing electric field is also dependent radioactive. What’s more important, the LC vibration circuit was enlarged into dipole antenna, the current vibration in dipole antenna causes timing current and timing electric charge. The electric field wave is caused by timing electric charge in antenna, the magnetic field wave is caused by timing current in antenna, and the transmission between electric field and magnetic field are made by current flow in dipole antenna. The timing electric field and timing magnetic field are caused by timing motion of electric charges. The electric field wave and magnetic field wave in permatron are caused by the charge motion. So field can not produce field.

The wave velocity in free space is equal to transmission velocity of the electric signal in dipole antenna. The m、e of good conductor is equal to m0、e0 in vacuum, so wave’s radiation velocity is equal to transmission velocity of electric signal inside conductor , that is to say wave’s radiation velocity is equal to the transmission velocity c0 of electric signal in the conductor

The conclusion in this chapter is timing electric field is caused by timing electric charge, the timing magnetic field is caused by timing current, the electric field wave and magnetic field wave are all dependent radioactive, and the radioactive density is polynomial function of distance.