Discussion of http://www.ivorcatt.com/1_1.htm from http://www.ivorcatt.com/em.htm

 

http://www.ivorcatt.com/1_1.htm

Battery and resistor. Steady state.

The student starts with an elementary, very familiar situation; a battery driving a lamp. Ohmís law is used to calculate the electric current and the power delivered to the lamp and dissipated in it. There is a voltage drop between the two wires, resulting in electric field in the space (dielectric) between the wires. This electric field was described by Michael Faraday in the early 1900s. The mathematics in this section can be ignored.

Battery and resistor. Initial state.

This is the start of a unique journey without precedent in books on electromagnetic theory. The switches are closed, and the next few nanoseconds are analysed. This will lead us to the Transverse Electromagnetic Wave (TEM Wave), which is the basis of the authorís approach to electromagnetic theory. In contrast, the TEM Wave is virtually unknown among electronic engineers. It is not grasped by university lecturers, and is more or less totally missing from recently published text books. See http://www.electromagnetism.demon.co.uk/17136.htm Again in this section, the mathematics can be safely ignored. Only please appreciate that if the lamp is ten feet (10 nanoseconds) away, its resistance cannot determine the ratio of voltage to current in and between the wires for the first ten nanoseconds, which must be determined by the physical nature of the two parallel wires. What matters turns out to be the shape of the wiresí cross sections and of the space between them. The field patterns are exactly the same as one gets for direction of electric current flow and of equipotential lines when two conducting surfaces of the same cross section are painted onto resistive paper, and a voltage difference is introduced between the two conducting surfaces.

Unterminated transmission line.

This is where the drama begins. After switch on (Figure 5), the voltage step advances to the right much as the Severn Bore advances up the river Severn. Were the advancing step in the river to meet a weir, it would reflect back down the river. This is what happens when the step (Figure 5) reaches the right hand end of the wires. All the rightwards flowing energy (electromagnetic field) reflects back towards the battery source. Again, the mathematics may be ignored.

Ivor Catt22mar03

When I wrote the 1994 book I did not know the full depths of ignorance of relevant professors, lecturers and text book writers around the world. This led me, defensively, to construct a great deal of mathematics, in case the Establishment asserted that I lacked mathematical competence. I did not at that time know that the Electromagnetic Theory Establishment would be totally incapable of defending itself against my charges, and incapable of mounting any sort of counter-attack. In 1994 I did not know, as I now know, that I fully control this whole field, and there is no competition, only fear.Ivor Catt††† 22mar03