XVI.—On the Faraday-Tube Theory of Electro-Magnetism

1923 ◽  
Vol 42 ◽  
pp. 225-246
Author(s):  
William Gordon Brown
Keyword(s):  
Mathematical Theory ◽  
Physical Theory ◽  
Quantitative Form ◽  
Electrical Theory ◽  
Lines Of Force

The method of describing a field of force by means of lines or tubes of induction, which originated with Faraday, was given a quantitative form by Sir J. J. Thomson, and further discussed by N. Campbell in his book Modern Electrical Theory. Since Maxwell himself looked on his work as a mathematical theory of Faraday's lines of force, one is tempted to examine the original physical theory for hints as to the modification of the Maxwellian theory to suit certain modern requirements.

Models, structure, and generality in Clerk Maxwell’s theory of electromagnetism

2017 ◽  
Author(s):  
Olivier Darrigol
Keyword(s):  
Physical Theory ◽  
Electromagnetic Theory ◽  
System Of Equations ◽  
Structural Requirements ◽  
Electricity And Magnetism ◽  
Lagrangian Form ◽  
Gradual Development ◽  
William Thomson ◽  
Fundamental Equations ◽  
Lines Of Force

This article examines the gradual development of James Clerk Maxwell’s electromagnetic theory, arguing that he aimed at general structures through his models, illustrations, formal analogies, and scientific metaphors. It also considers a few texts in which Maxwell expounds his conception of physical theories and their relation to mathematics. Following a discussion of Maxwell’s extension of an analogy invented by William Thomson in 1842, the article analyzes Maxwell’s geometrical expression of Michael Faraday’s notion of lines of force. It then revisits Maxwell’s honeycomb model that he used to obtain his system of equations and the concomitant unification of electricity, magnetism, and optics. It also explores Maxwell’s view about the Lagrangian form of the fundamental equations of a physical theory. It shows that Maxwell was guided by general structural requirements that were inspired by partial and temporary models; these requirements were systematically detailed in Maxwell’s 1873 Treatise on electricity and magnetism.

scholarly journals On Physical Lines of Force in Electrical Theory

1908 ◽  
Vol 26 (4) ◽  
pp. 306-311
Author(s):  
Fernando Sanford
Keyword(s):  
Electrical Theory ◽  
Lines Of Force

On the missed opportunities of classical physics

2021 ◽  
Vol 34 (4) ◽  
pp. 475-479
Author(s):  
Toir Makhsudovich Radzhabov
Keyword(s):  
Physical Theory ◽  
Finite Size ◽  
Physical Field ◽  
Classical Approach ◽  
Structural Elements ◽  
Missed Opportunities ◽  
Classical Physics ◽  
Lines Of Force

This study considers a variant of the realization of Dirac’s ideas regarding the limited number of Faraday force lines and allowance for the finite size of microparticles in physical theory. It is shown that within the framework of the classical approach, consideration of the limited number of Faraday force lines opens additional possibilities for describing and characterizing the physical field and associated phenomena. Specifically, it is shown that it becomes possible to obtain in a facile manner an expression for describing the discrete radiation of an atom, which agrees well with the empirical Balmer relation. An assumption is made about the possibility of the material existence of Faraday force lines as structural elements of the physical field. It is suggested that the natural fields of physical bodies can be considered as a set of materially existing lines of force, i.e., as a luminiferous ether.

A Mathematical Theory of Hints

1995 ◽  
Author(s):  
Jürg Kohlas ◽  
Paul-André Monney
Keyword(s):  
Mathematical Theory

The Event Universe

2015 ◽  
Author(s):  
Leemon B. McHenry
Keyword(s):  
Electromagnetic Field ◽  
Quantum Mechanics ◽  
Common Sense ◽  
Physical Theory ◽  
Alfred North Whitehead ◽  
Bertrand Russell ◽  
Theory Of Relativity ◽  
The World ◽  
Modern Physics ◽  
Linguistic Methods

What kinds of things are events? Battles, explosions, accidents, crashes, rock concerts would be typical examples of events and these would be reinforced in the way we speak about the world. Events or actions function linguistically as verbs and adverbs. Philosophers following Aristotle have claimed that events are dependent on substances such as physical objects and persons. But with the advances of modern physics, some philosophers and physicists have argued that events are the basic entities of reality and what we perceive as physical bodies are just very long events spread out in space-time. In other words, everything turns out to be events. This view, no doubt, radically revises our ordinary common sense view of reality, but as our event theorists argue common sense is out of touch with advancing science. In The Event Universe: The Revisionary Metaphysics of Alfred North Whitehead, Leemon McHenry argues that Whitehead's metaphysics provides a more adequate basis for achieving a unification of physical theory than a traditional substance metaphysics. He investigates the influence of Maxwell's electromagnetic field, Einstein's theory of relativity and quantum mechanics on the development of the ontology of events and compares Whitehead’s theory to his contemporaries, C. D. Broad and Bertrand Russell, as well as another key proponent of this theory, W. V. Quine. In this manner, McHenry defends the naturalized and speculative approach to metaphysics as opposed to analytical and linguistic methods that arose in the 20th century.

Evolution of the concepts of magnetic and electric lines of force

1964 ◽  
Vol 84 (12) ◽  
pp. 715-721 ◽  
Author(s):  
Mikhail A. Leontovich
Keyword(s):  
Lines Of Force

A Quantitative Theory for the Computation of Tire Friction Under Severe Conditions of Sliding

1986 ◽  
Vol 14 (1) ◽  
pp. 44-72 ◽  
Author(s):  
C. M. Mc C. Ettles
Keyword(s):  
Friction Coefficient ◽  
Flash Temperature ◽  
Contact Conditions ◽  
Quantitative Form ◽  
Heating Effects ◽  
Rubber Friction ◽  
Viscoelastic Effects ◽  
Tire Friction ◽  
Pavement Friction ◽  
Metal Polymer

Abstract It is proposed that tire-pavement friction is controlled by thermal rather than by hysteresis and viscoelastic effects. A numerical model of heating effects in sliding is described in which the friction coefficient emerges as a dependent variable. The overall results of the model can be expressed in a closed form using Blok's flash temperature theory. This allows the factors controlling rubber friction to be recognized directly. The model can be applied in quantitative form to metal-polymer-ice contacts. Several examples of correlation are given. The difficulties of characterizing the contact conditions in tire-pavement friction reduce the model to qualitative form. Each of the governing parameters is examined in detail. The attainment of higher friction by small, discrete particles of aluminum filler is discussed.

Sign in / Sign up

Export Citation Format

Share Document