English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

Huygens' principle (HP), extinction theorem (ET), and Franz's /Franz-Harrington formulation (FHF, which is a mathematical expression ofsurface equivalence principle) are the important components of electromagnetic(EM) theory, and they are generalized from the following aspects.  1) Traditional HP, ET, and FHF in homogeneous isotropic environment aregeneralized to inhomogeneous anisotropic lossy environment. 2) Traditional FHFfor homogeneous isotropic material system is generalized to inhomogeneousanisotropic lossy material system in this paper, and will be furthergeneralized to metal-material combined system in future works. 3) The Huygens'surface in traditional HP and ET is a single closed surface. In this paper, itis generalized to the "Huygens' surface" which is constructed by multipleclosed surfaces. In future works, it will be further generalized to the"Huygens' boundary" which includes some lines and open surfaces. 4) For amaterial body, traditional FHF has only ability to express the externalscattering field and the internal total field (the summation of scattering andincident fields) in terms of the equivalent sources on material boundary, andit is generalized to formulating the internal scattering and incident fields inthis paper.  In addition, the relationships among HP, ET, and FHF are studied, and it isproved that HP and ET are equivalent to each other.

On Huygens' Principle, Extinction Theorem, and Equivalence Principle  (Inhomogeneous Anisotropic Material System in Inhomogeneous Anisotropic  Environment)