Page:Aether and Matter, 1900.djvu/26

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CONTENTS
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identical with the present scheme: illustration from theory of double refraction, compared with Helmholtz's wider theory. The aether sufficiently defined by its dynamical equations. The transition from molecular to mechanical theory: the latter involves only the principal values of the integrals expressing the potentials.

Chapter VIII Optical and other developments relating to energy and stress 127
Mechanical electrodynamic forces expressed in terms of a stresssystem: limited validity of Maxwell's expressions, their physical meaning: his dielectric stress invalid except in free aether. Application to repulsion of conducting masses by magnetic alternators: copper filings lie along lines of force. Contrast between relations of obstacles to electric waves and to sound waves. Mechanical pressure of radiation; on a black body is given by Maxwell's law. Absorption of radiation: character of surface of a perfectly black body; of a perfect reflector. Relation of the complete radiation to the temperature: Boltzmann's proof of Stefan's law. Dynamical and material symmetry: general deductions regarding perversion, reversibility, chirality: influence of convection through the aether on structure. Adiabatic compression of radiation: its mechanical value: legitimacy of an ideal screen impervious to radiation but pervious to aether.
SECTION III
Chapter IX Influence of steady motion on an electrostatic material system 149
Existence of an electric potential in every steady_state. Equations for case of uniform translation: characteristic equation of the potential, solved: electric distribution and force unaffected, but magnetic field altered: correlation with a stationary system. Null results of convection of magnets. Convection of a dielectric system. Uniform rotation of an electrostatic system: electric potential not constant in conductor: solution for a rotating di electric; for a spherical conductor.
Chapter X General problem of moving matter treated in relation to the individual molecules 161
Analytical specification of an electron as a moving pole in the electric field necessitating a singularity in the magnetic field. The problem, formulated so as to take cognizance of the electrons individually, is determinate in terms of the aether alone if matter is
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