Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Time-dependent entropy evolution in microscopic and macroscopic electromagnetic relaxation.

James Baker-Jarvis¹

¹National Institute of Standards and Technology, Electromagnetics Division, MS 818.01, Boulder, Colorado 80305, USA. jjarvis@boulder.nist.gov

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|February 21, 2006

Summary

This study explores entropy

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Optimization Techniques for Permittivity and Permeability Determination.

Journal of research of the National Institute of Standards and Technology·2017

Same author

Complex Permittivity of Planar Building Materials Measured With an Ultra-Wideband Free-Field Antenna Measurement System.

Journal of research of the National Institute of Standards and Technology·2016

Same author

Electromagnetic Metrology on Concrete and Corrosion.

Journal of research of the National Institute of Standards and Technology·2016

Same author

The Interaction of Radio-Frequency Fields With Dielectric Materials at Macroscopic to Mesoscopic Scales.

Journal of research of the National Institute of Standards and Technology·2016

Same author

Dielectric polarization evolution equations and relaxation times.

Physical review. E, Statistical, nonlinear, and soft matter physics·2007

Same author

Nonequilibrium electromagnetics: Local and macroscopic fields and constitutive relationships.

Physical review. E, Statistical, nonlinear, and soft matter physics·2004

Area of Science:

Thermodynamics and Electromagnetism

Background:

Understanding entropy evolution in electromagnetic interactions is key.
Bridging electromagnetism and thermodynamics requires a statistical-mechanical approach.

Purpose of the Study:

To investigate entropy and its time/frequency domain evolution under electromagnetic fields.
To develop a Liouville-based statistical-mechanical theory for electromagnetic interactions.

Main Methods:

Utilizing a Liouville-based statistical-mechanical theory.
Employing projection-operator based nonequilibrium entropy.
Deriving equations for entropy and entropy production.

Main Results:

Microscopic entropy is shown to be reversible.
Macroscopic entropy satisfies a theorem.

Related Experiment Videos

Spectral entropy development aids in studying material frequency response.

Conclusions:

The theory is applied to polarization, magnetization, and macroscopic fields.
The relationship between frequency-domain entropy and material properties (permittivity, permeability, impedance) is discussed.