Recent content by Txema

fresh_42, Bosko, my question is perfectly answered, thank you very much.

No, I wish, I'm 60 years old.:smile: Thank you Perok for your answer.

Can a vector subspace have the same dimension as the space it is part of? If so, can such a subspace have a Cartesian equation? if so, can you give an example. Thanks in advance;

DaveE, Baluncore, tech99, thank you very much for your help. I incorporate the suggestions into my understanding process. Ok, I understand that some phenomena present simultaneous manifestations without being able to establish cause-effect relationships between them. If I understand correctly...

Thank you very much for your answer. Yes, I consider the ac circuit as a transmission line. The equivalent circuit to the line with inductors and capacitors is useful to obtain (telegrapher's) equations of V and I as a function of the line parameters, i.e. to forget about fields and charges, but...

Thank you very much for your answer. I appreciate that the explanation includes both the fields and V-I. Does this mean that an electric field line (to simplify) advances through the dielectric "drawing", with its perpendicular force, free charges from the conductor to the surface and then...

Thank you very much for your answer. I have a couple of questions. 1) Do the electric field lines, traveling in the dielectric, have a certain curvature so that on the surface of the conductors there is a longitudinal component of this field? 2) The capacitance in the conductors corresponds to...

Premise: the electric field inside a perfect conductor is zero. The boundary conditions indicate that the tangential component is continuous, so the tangential component at the surface of the conductor is also zero. In conclusion, the electric field is perpendicular at the surface of a perfect...

My approach was the simplest, neglecting the other waves compared to the tem wave. In any case, thanks for responding.

This comment has been very timely. I don't know for what reason, I had the idea that coulomb and non-Coulomb electric fields lead separate lives, perhaps due to their different sources. I realize that they are both sets of vectors E in space. With this, my objections vanishes. I will review the...

INTRODUCTION From the boundary conditions of the electromagnetic field in perfect conductors, it is deduced that in a transmission line with a time-varying current, the field vectors E and B in the dielectric lie in planes transverse to the conductors and also that the E field is normal to the...

Ok, I understand the explanation, thanks a lot. The fact that telegrapher's equations can be obtained simply by applying Kirchhoff's rules to a circuit of infinitesimal length with lumped R,L in series and G,C in parallel and di, dv difference between input and output was confusing me.

My doubt came precisely from the fact that in the study of transmission lines, scalar potential and vector potential are not used, a method that guarantees compliance with Maxwell's equations, to reach the E and B fields. Instead they are used geometric similarities between the fields of a TEM...

Thank you very much. :smile: English is not my usual language, perhaps the word "artifact" would have been more appropriate...🤔 Readings: Web: A lot of pages among which I would highlight: https://www.researchgate.net/publication/260936949_A_qualitative_approach_to_electricity books...

The operation of a transmission line is based on the axial propagation of electromagnetic waves between the two line conductors. However, the study of the transmission lines does not focus on E and B waves but on voltage and current waves. It is considered that there are resistance...