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. Ohm’s 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 author’s 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 wires’ 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 Catt 22mar03 |
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 |