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Related Concept Videos

Plane Electromagnetic Waves II01:29

Plane Electromagnetic Waves II

Consider a plane wavefront traveling in position x-direction with a constant speed. This wavefront can be utilized to obtain the relationship between electric and magnetic fields with the help of Faraday's law.
Electromagnetic Wave Equation01:24

Electromagnetic Wave Equation

Maxwell's equations for electromagnetic fields are related to source charges, either static or moving. These fields act on a test charge, whose trajectory can thus be determined using suitable boundary conditions. The objective of electromagnetism is thus theoretically complete.
However, although electric and magnetic fields were first introduced as mathematical constructs to simplify the description of mutual forces between charges, a natural question emerges from Maxwell's equations: What...
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Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
Plane Electromagnetic Waves I01:30

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The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed to be a...
Maxwell's Equation Of Electromagnetism01:29

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James Clerk Maxwell (1831–1879) was one of the major contributors to physics in the nineteenth century. Although he died young, he made major contributions to the development of the kinetic theory of gases, to the understanding of color vision, and to understanding the nature of Saturn's rings. He is probably best known for having combined existing knowledge on the laws of electricity and magnetism with his insights into a complete overarching electromagnetic theory, which is represented by...
Differential Form of Maxwell's Equations01:17

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James Clerk Maxwell (1831–1879) was one of the significant contributors to physics in the nineteenth century. He is probably best known for having combined existing knowledge of the laws of electricity and the laws of magnetism with his insights to form a complete overarching electromagnetic theory, represented by Maxwell's equations. The four basic laws of electricity and magnetism were discovered experimentally through the work of physicists such as Oersted, Coulomb, Gauss, and Faraday.

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Related Experiment Video

Updated: Jul 6, 2026

Comparative Study of Simulation of Temperature Rise in Ring Main Unit
04:35

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Published on: July 5, 2024

Coupled simulation of an electromagnetic heating process using the finite difference time domain method.

Hao Chen1, Juming Tang, Fang Liu

  • 1Biological Systems Engineering Department, Washington State University, Pullman, WA 99164-6120, USA.

The Journal of Microwave Power and Electromagnetic Energy : a Publication of the International Microwave Power Institute
|March 21, 2008
PubMed
Summary

A new simulation model accurately predicts microwave heating in food products. This tool aids in designing efficient microwave heating systems and processes for industrial applications.

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Area of Science:

  • Food Science
  • Electromagnetic Engineering
  • Heat Transfer

Background:

  • Microwave heating of food involves complex interactions.
  • Designing efficient microwave heating systems requires accurate predictive models.
  • Current models may not fully capture coupled electromagnetic and thermal phenomena.

Purpose of the Study:

  • To develop and validate a simulation model for coupled electromagnetic heating and heat transfer in microwave processing.
  • To provide a tool for optimizing microwave heating system design and industrial processes.

Main Methods:

  • Combined commercial electromagnetic simulation software with a custom heat transfer model.
  • Developed a model to simulate coupled electromagnetic and heat transfer phenomena.
  • Validated the model using experimental data for hot water and microwave heating in a single-mode system at 915 MHz.

Main Results:

  • Simulation results showed good agreement with experimental data.
  • The model successfully predicted temperature distributions during microwave heating.
  • The coupled model provides valuable insights into industrial electromagnetic heating.

Conclusions:

  • The developed simulation model is reliable and efficient for predicting microwave heating processes.
  • This model can significantly guide the design of microwave heating systems and optimize industrial applications.
  • The validated model offers a powerful tool for understanding and improving electromagnetic heating in the food industry.