Results 31 to 40 of about 1,170,845 (206)
Frequency converter implementing an optical analogue of the cosmological redshift
, 2010 According to general relativity, the frequency of electromagnetic radiation is altered by the expansion of the universe. This effect--commonly referred to as the cosmological redshift--is of utmost importance for observations in cosmology.
Balazs +26 more
core +1 more source
Transformation Optics and the Geometry of Light [PDF]
, 2008 Metamaterials are beginning to transform optics and microwave technology thanks to their versatile properties that, in many cases, can be tailored according to practical needs and desires.
Leonhardt, Ulf, Philbin, Thomas G.
core +2 more sources
, 2011 The classical energy minimization principles of Dirichlet and Thompson are extended as minimization principles to acoustics, elastodynamics and electromagnetism in lossy inhomogeneous bodies at fixed frequency.
Bouchitte, Guy +2 more
core +1 more source
Electromagnetic analysis of arbitrarily shaped pinched carpets
, 2010 We derive the expressions for the anisotropic heterogeneous tensors of permittivity and perme- ability associated with two-dimensional and three-dimensional carpets of an arbitrary shape. In the former case, we map a segment onto smooth curves whereas in
A. Greenleaf +6 more
core +2 more sources
The role of angular momentum in the construction of electromagnetic multipolar fields [PDF]
, 2012 Multipolar solutions of Maxwell's equations are used in many practical applications and are essential for the understanding of light-matter interactions at the fundamental level.
Blatt J M +12 more
core +2 more sources
, 2017 The propagation of electromagnetic waves trapped within dielectric and magnetic layers is considered. The description within the three-dimensional theory is compared with the simplified analysis in two dimensions.
Bargiela, Piotr, Radozycki, Tomasz
core +1 more source
, 1998 An analogy between electromagnetism and acoustics is presented in 2D. The propagation of sound in presence of absorbing material is modeled using an open boundary microwave package.
Furstoss, M. +2 more
core +2 more sources
Relative Nature of Electric Permittivity and Magnetic Permeability of Electromagnetic Wave
Indian Journal of Advanced Physics, 2022 This research is about the special theory of relativity on electric permittivity and magnetic permeability of electromagnetic wave. For this, Four Maxwell’s electromagnetic equations play an important role. James Clerk Maxwell suggested that the light travel as electromagnetic wave which require no material medium for propagation. The speed of light (C)
openaire +2 more sources
Kramers-Kronig relations and the properties of conductivity and permittivity in heterogeneous media
, 2018 The macroscopic electric permittivity of a given medium may depend on frequency, but this frequency dependence cannot be arbitrary, its real and imaginary parts are related by the well-known Kramers-Kronig relations.
Bedard, Claude, Destexhe, Alain
core +1 more source
Dielectric black hole analogues
, 2001 Alternative to the sonic black hole analogues we discuss a different scenario for modeling the Schwarzschild geometry in a laboratory - the dielectric black hole.
Plunien, Günter +2 more
core +1 more source