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From the page 9 of the Introduction to "QED" Feynman says, "You're not going to be able to understand it... You see my Physics students don't understand it either. That is because I don't understand it. Nobody does!" Good luck with analogies to things we seem to "understand". -- Peter K1PO Indialantic By-the-Sea, FL. Makes me feel better :-) but.... I just picked up "Advanced Electromagnetism and Vacuum Physics" by Patrick Cornille (Advanced Electromagnetic Systems, France) published by World Scientific Publishing Co. 2003 while browsing Strand Book Store in NYC (sale $32) and the following Preface introduction caught my interest: "The electromagnetic theory is the most important theory in physics, first because the electromagnetic force is the only force that can be easily manipulated by man with wellknown applications, secondly an extension of this theory in the future may explain all the fundamental forces known to day in nature. A large volume of literature has appeared since the latter days of World war II, written by researchers expanding the basic principles of electromagnetic theory and applying Maxwell's equations to many important practical problems. However, it is my opinion that the electromagnetic theory is not complete and fully understood. A simple example proven these claims is given in this book when the Helmholtz theorem is analyzed. We proved from a mathematical point of view that Maxwell's equations are not complete since a scalar polarization must be taken into account in the equations. It is worth insisting that Maxwell, when he formulated out his theory, was mainly guided by the experimental work performed by the physicists of his time. He tried to give an hydrodynamics understanding of his theory, which is still favored by certain physicists. Even today, Maxwell's equations are given as granted, their validity being justified by experiments. Actually, there is no demonstration of Maxwell's equations from first principles since the mechanical approach used by Maxwell was rapidly abandoned in favor of a novel nonmechanical entity: the electromagnetic field. While the Maxwell's equations can obviously be obtained from a variational principle where they are derived from an action appropriately chosen in order to recover them. In spite of the success of the Maxwell theory in our present technology, we believe that the last word on Maxwell's equations has not been said yet. The reason is that Maxwell's equations raise a number of fundamental questions which have not been answered in a satisfactory manner to date: - One of these questions deals with the existence of a medium sustaining transverse electromagnetic waves. - Another question concerns the fact that Maxwell's equations are not Galilean invariant. - The question of covariance is also strongly related to the electromagnetic induction phenomena, which is difficult to understand within the framework of the special relativity theory. - The discrete nature of the electric charge, where no physical concept has been proposed to explain its quantization, remains one of the deepest mysteries of physics. - There is also the reason why the Lorentz force does not come from the Maxwell's equations, but is additional to them. The reader is reminded that classical electrodynamics demands a connection between the Maxwell's equations and the Lorentz force. In view of a prevalent trend towards a hydrodynamic description of matter and radiation, we propose in this book another hydrodynamic wave model for the existence and the propagation of matter and radiation in the vacuum where equations of electrodynamics can be derived from simple fundamental principles. We shall answer the above questions. " etc. Hoping to find answers to some of the puzzling questions relating to antennas and propagation, I am looking forward to time when I can immerse myself deeply into this new stuff (and get more confused?) Maybe this will intrigue some of youze guyz and help in sheding some light on our neandertal brains? 73 Yuri, K3BU |
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I just picked up "Advanced Electromagnetism and Vacuum Physics" by Patrick
Cornille (Advanced Electromagnetic Systems, France) published by World Scientific Publishing Co. 2003 while browsing Strand Book Store in NYC (sale $32) and the following Preface introduction caught my interest: Good deal. Amazon wants $96 new, and $91 used. (VERY gently, I hope!) |
#3
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I just picked up "Advanced Electromagnetism and Vacuum Physics" by Patrick Cornille (Advanced Electromagnetic Systems, France) published by World Scientific Publishing Co. 2003 while browsing Strand Book Store in NYC (sale $32) and the following Preface introduction caught my interest: Good deal. Amazon wants $96 new, and $91 used. (VERY gently, I hope!) There was one more left on the shelf as I remember. If anyone wants, I might be able to check it out at this "World's Largest Used Bookstore". I giured it was worth for the third I wanted to read in the book :-) Yuri |
#4
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Yuri:
[snip] Maybe this will intrigue some of youze guyz and help in sheding some light on our neandertal brains? 73 Yuri, K3BU [snip] Maxwell's Equations? No thanks... Maxwell is soooo pase. I prefer to use the equations of quantum electrodynamics when computing the lengths of the wire loops for my twenty meter quad antennas! I get better accuracy and more gain that way. :-) -- Peter K1PO Indialantic By-by-the-Sea, FL. |
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