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.
In the 1880s Heinrich Hertz discovered that a spark jumping between two pieces of metal emits a flash of light—rapidly oscillating electromagnetic waves—which can be picked up by an antenna. To honor his groundbreaking work, ...
Optics & Photonics
May 8, 2024
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Electrical engineers at Duke University have determined the theoretical fundamental limit for how much electromagnetic energy a transparent material with a given thickness can absorb. The finding will help engineers optimize ...
Optics & Photonics
Mar 14, 2024
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When light encounters a particle, it interacts with the particle instead of just passing through smoothly. The light waves can get scattered in different directions because of the light-matter interactions.
Optics & Photonics
Jan 29, 2024
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