Learning the Basic Physics of Electromagnetic Radiation Through Computational Modeling

Authors

  • Edmund K. Miller Life Fellow, IEEE Los Alamos National Laboratory (Retired)

DOI:

https://doi.org/10.13052/2025.ACES.J.401101

Keywords:

Charge acceleration, computer modeling, electromagnetic radiation, Lienard-Wichert fields, Poynting vector, reflection radiation, source radiation, time-domain electromagnetics

Abstract

While electromagnetics (EMs) may be perceived to be a mathematically intensive subject, the following discussion demonstrates that many important education-related aspects of EM radiation can be “discovered” through computational modeling. The goal here is to demonstrate an intuitive learning environment that reveals important features of EM physics to incentivise a desire to learn about the underlying mathematics on which the computer model is based. The idea is that seeing the fascinating details that the equations produce prior to confronting the possibly intimidating background mathematics can be a more productive and enjoyable exercise.

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Author Biography

Edmund K. Miller, Life Fellow, IEEE Los Alamos National Laboratory (Retired)

Edmund K. Miller earned a B.S. (EE) in 1957 from Michigan Technological University (then known as Michigan College of Mining and Technology. His graduate work was done at the U. of Michigan, with an M.S. (Nuclear Engineering) in 1958, an M.S. (EE) in 1963 and a Ph.D. (EE) in 1965. His working career included 4 universities (Michigan Tech 1958–59, U. of Michigan 1959–68, Kansas U. 1985–1987 and Ohio U.1994–95); 3 companies (MBAssociates (1969–71, Rockwell International Science Center 1985–1987, and General Research Corporation (1987–1988); and 2 National Laboratories (Lawrence Livermore (1971–85 and Los Alamos (1989–1993). He has been actively retired since 1995 and has lived in Lincoln, CA since 2003.

His involvement in Computational Electromagnetics began in 1959 and continues to the present. He wrote a regular column “PCs for AP and Other EM Reflections” from 1985 to 2000 for the IEEE Antennas and Propagation Society. In addition to his nearly 200 journal articles and various society proceedings he edited the book “Time Domain Measurements in Electromagnetics” in 1986 and co-edited the IEEE reprint volume “Computational Electromagnetics: Frequency-Domain Moment Methods”. He wrote the 2023 book “Charge Acceleration and the Spatial Distribution of Radiation Emitted by Antennas and Scatterers” that summarized his work on radiation physics over the years, and another about to be published “Model-Based Parameter Estimation in Electromagnetics”.

Dr. Miller was the first president of ACES, of which he was a founding member, and is a Fellow of the IEEE and ACES.

References

A. Liénard, “Champ électrique et magnétique produit par une charge électrique concentrée en un point et animée d’un movement quelconque,” L’éclairage Électrique, vol. 16, pp. 16–21, 1898.

E. Wiechert, “Elektrodynamische elementargesetze,” Ann. Phys., vol. 4, pp. 667–689, 1901.

K. Yee, “Numerical solution of initial boundary value problems involving Maxwell’s equations in isotropic media,” IEEE Transactions on Antennas and Propagation, vol. 14, no. 3, pp. 302–307, 1966.

J. A. Landt, E. K. Miller, and M. L. Van Blaricum, WT-MBA.LL1B: A Computer Program for the Time-Domain Response of Thin-Wire Structures, Livermore, CA: Lawrence Livermore Laboratory, 1974.

E. K. Miller, A. J. Poggio, and G. J. Burke, “An integro-differential equation technique for the time-domain analysis of thin-wire structures. Part I: The numerical method,” Journal of Computational Physics, vol. 12, pp. 24–48, 1973.

R. F. Harrington, Field Computation by Moment Methods. New York, NY: Macmillan, 1968.

E. K. Miller, “Computational electromagnetics,” in The Electrical Engineering Handbook, Richard C. Dorf, Ed. Boca Raton, FL: CRC Press, pp. 1028–1049, 1993.

G. J. Burke, E. K. Miller, and A. J. Poggio, “The numerical electromagnetics code (NEC) – A brief history,” in 2004 IEEE Int. Antennas Propagat. Symp. Dig., vol. 42, pp. 2871–2874, June 2004.

G. S. Smith, Classical Electromagnetic Radiation Cambridge: Cambridge University Press, 1997.

E. K. Miller, Charge Acceleration and the Spatial Distribution of Radiation Emitted from Antennas and Scatterers. London: Institution of Engineering and Technology, 2023.

B. Cabrera, Physics Simulations II: Electromagnetism, Academic Version. Santa Barbara, CA: Intellimation Library for the Macintosh, 1990.

B. Cabrera and E. K. Miller, “Macintosh Movies for Teaching Undergraduate Electricity and Magnetism,” in 1986 International IEEE APS Symposium, Philadelphia, PA, 9–13 June 1986.

J. Bach Anderson, “Admittance of infinite and finite cylindrical metallic antenna,” Radio Science, vol. 3, no. 6, pp. 607–621, 1968.

C. A. Balanis, Antenna Theory: Analysis and Design. New York: Harper & Row Publishers, 1982.

E. K. Miller and G. J. Burke, “A multi-perspective examination of the physics of electromagnetic radiation,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 16, no. 3, pp. 190–201, 2001.

E. K. Miller, “Comparison of the radiation properties of a sinusoidal current filament and a pec dipole of near zero radius,” IEEE Antennas and Propagation Society Magazine, vol. 48, no. 4, pp. 37–47, Aug. 2006.

E. K. Miller, “Time-Domain Far-Field Analysis of Radiation Sources and Point-Source Coherence,” IEEE Antennas and Propagation Society Magazine, vol. 54, no. 2, pp. 100–108, Apr. 2012.

E. K. Miller, “The differentiated on-surface Poynting vector as a measure of radiation loss from wires,” IEEE Antennas and Propagation Society Magazine, vol. 48, no. 6, pp. 21–32, Dec. 2006.

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Published

2025-11-30

How to Cite

[1]
E. K. . Miller, “Learning the Basic Physics of Electromagnetic Radiation Through Computational Modeling”, ACES Journal, vol. 40, no. 11, pp. 1055–1063, Nov. 2025.

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General Submission