Methods in electromagnetism comprise analytical, numerical, and experimental techniques used to formulate, solve, and validate Maxwell’s equations and related boundary‑value problems in electric and magnetic fields. Analytical methods include separation of variables, Green’s functions, integral transforms, and multipole expansions for canonical geometries and material configurations. Numerical methods encompass finite element, finite difference (including FDTD), boundary element, and method of moments approaches to approximate field distributions in complex structures. Experimental techniques involve field mapping, scattering and impedance measurements, and characterization of material permittivity and permeability, all aimed at quantifying electromagnetic behavior in devices, media, and engineered systems.
Light can carry angular momentum in two distinct ways. One comes from polarization, which describes how the electric field rotates. The other comes from the shape of the wavefront itself, which can twist like a corkscrew ...
Optics & Photonics
Mar 31, 2026
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20
Many current wireless communication, imaging and sensing technologies rely on components that convert oscillating electric and magnetic fields (i.e., electromagnetic waves) into electrical signals. Some of the most used components ...
Skoltech researchers and their colleagues from KTH Royal Institute of Technology, Sweden, have created an important building block for future 6G communication technology, which will make wireless data transfer at superior ...
Nanophysics
Mar 17, 2026
1
1985
A fundamental goal of physics is to explain the broadest range of phenomena with the fewest underlying principles. Remarkably, seemingly disparate problems often exhibit identical mathematical descriptions.
Condensed Matter
Mar 5, 2025
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165
Light was long considered to be a wave, exhibiting the phenomenon of interference in which ripples like those in water waves are generated under specific interactions. Light also bends around corners, resulting in fringing ...
A team of researchers from the University of Ottawa has developed innovative methods to enhance frequency conversion of terahertz (THz) waves in graphene-based structures, unlocking new potential for faster, more efficient ...
Optics & Photonics
Jan 21, 2025
0
120
In a paper published in Chaos, researchers from Sergio Arboleda University in Bogotá, Colombia, and the Georgia Institute of Technology in Atlanta used an electrophysiological computer model of the heart's electrical circuits ...
General Physics
Nov 5, 2024
1
761
Rapid advancements in the electronics industry have provided significant convenience for civilian use, but have also contributed to electromagnetic pollution, posing risks to human safety. To meet the diverse requirements ...
Nanomaterials
Oct 21, 2024
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29
Physicists at the University of Southampton have tested and proven a 50-year-old theory for the first time using electro-magnetic waves. They have shown that the energy of waves can be increased by bouncing "twisted waves"—those ...
Optics & Photonics
Sep 9, 2024
0
278
Researchers at ETH Zurich have managed to make sound waves travel only in one direction. In the future, this method could also be used in technical applications with electromagnetic waves.
General Physics
Sep 6, 2024
0
1162
