Presentation
La physique revisitée is a scientific publishing platform whose articles are peer-reviewed. It allows scientists, researchers, and non-researchers with expertise in physics to share their innovative work. The approach consists in recalling how current knowledge has been constructed, and in complementing it with a renewed interpretation and new conceptual perspectives, without calling its validity into question.
Our scientific positioning: revisiting physics
Scientific knowledge has implications in all fields, but here we are interested in those that allow us to revisit physics and explore new avenues. Research is essentially based on experiments that allow us to develop models and sometimes new theories, but scientists have always advanced science by compiling and synthesizing the knowledge of their predecessors:
- Newton, based on Kepler’s laws, developed the law of universal gravitation, and even if legend has it that it was when he saw an apple fall that he had the idea to think about this problem, we obviously cannot speak of experimentation.
- Maxwell, based on the work of Coulomb, Ampère, Faraday and Gauss, established his famous equations and mathematically demonstrated the propagation of electromagnetic waves.
- Einstein explained the photoelectric effect and developed the hypothesis of the quantum of light (photon), thus initiating quantum mechanics. He based his work on that of Planck and on observations made by various physicists, which had no explanations in classical physics.
These illustrious examples show that it is essential to analyze acquired knowledge with hindsight and to deepen our understanding of it without necessarily resorting to new experiments or measurements. This is, on a much more modest scale, the approach followed in the articles proposed here. All LPR scientific articles are accompanied by a historical document, to the general public and identified as H-LPR-H. This document summarizes the historical scientific facts that shed light on certain points that are revisited in the associated article. Unlike the LPR article, the H-LPR-H document does not have innovative scientific scope and is not subject to such a demanding evaluation but to a verification of historical content by the editorial team.
Scientific articles and related historical documents:
Permeability, permittivity and the speed of light in vacuum
The first topic helps us understand the origin of the relationship between permeability and permittivity with the speed of light in a vacuum and shows that these two constants are composite constants. The implications are important.
History of electrical units
As a historical supplement to the previous article, the following document details the history of electric units and shows the implications that technological constraints, chance and arbitrary choices have had on harmonization with mechanics, on the SI expressions of electrostatic and magnetic forces as well as on the associated electromagnetic constants.
Wave impedance in a vacuum
This second topic demonstrates that the plane wave impedance in a vacuum, Z0, is often misinterpreted due to an inappropriate unit conversion that gives it the dimensions of a resistance. This article also shows that it is actually an electromechanical coupling constant that plays a role in all electromagnetic relationships that result in a mechanical effect. It proves to be of considerable importance.
History of field concept
As a historical complement to the previous article on wave impedance, the following document details the history of field concept, from Newton’s gravitational action at a distance to our modern representation of a local vector field, including Faraday’s lines of force. Finally, it recalls how Maxwell introduced excitation fields as complements to the classical fields of mechanical effect.
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