• In optics, negative refraction is the electromagnetic phenomenon where light rays become refracted at an interface that is opposite to their more commonly...
    9 KB (1,143 words) - 11:51, 2 November 2024
  • Thumbnail for Negative-index metamaterial
    and Atwater achieved negative refraction in the visible spectral regime. Besides reversed values for the index of refraction, Veselago predicted the...
    72 KB (7,651 words) - 15:54, 9 May 2025
  • Thumbnail for Refractive index
    described by Snell's law of refraction, n1 sin θ1 = n2 sin θ2, where θ1 and θ2 are the angle of incidence and angle of refraction, respectively, of a ray...
    82 KB (9,202 words) - 01:21, 24 May 2025
  • Thumbnail for Metamaterial
    a negative index of refraction for particular wavelengths have been the focus of a large amount of research. These materials are known as negative-index...
    102 KB (10,792 words) - 21:39, 27 April 2025
  • Thumbnail for Snell's law
    ibn-Sahl law, and the law of refraction) is a formula used to describe the relationship between the angles of incidence and refraction, when referring to light...
    27 KB (3,959 words) - 14:13, 19 May 2025
  • permittivity "ε" and magnetic permeability "μ" an index of refraction "n" is derived. The index of refraction determines how light is bent on traversing from one...
    97 KB (11,288 words) - 20:44, 22 May 2025
  • Thumbnail for Refraction
    medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction. How...
    20 KB (2,446 words) - 22:39, 16 April 2025
  • Thumbnail for Photonic metamaterial
    envisioned the possibility of refraction with a negative sign, according to Maxwell's equations. A refractive index with a negative sign is the result of permittivity...
    45 KB (4,373 words) - 01:39, 18 March 2025
  • Thumbnail for Acoustic metamaterial
    metamaterials: negative refraction, imaging, lensing and cloaking. Springer, Dordrecht 2013, ISBN 978-94-007-4812-5. Phononic crystals Negative refractive index...
    51 KB (5,804 words) - 15:21, 24 February 2025
  • Thumbnail for Metamaterial antenna
    metamaterial. DPS has a conventional positive index of refraction, while the DNG has a negative refractive index. Both slabs are impedance-matched to the outside...
    76 KB (8,667 words) - 07:38, 31 March 2025
  • Thumbnail for Lens
    Lens (redirect from Negative lens)
    transmissive optical device that focuses or disperses a light beam by means of refraction. A simple lens consists of a single piece of transparent material, while...
    70 KB (8,337 words) - 17:45, 21 May 2025
  • Thumbnail for History of metamaterials
    the proof of principle for functioning metamaterials with a negative index of refraction in the microwave- (at 10.5 Gigahertz) and optical range. This...
    62 KB (6,848 words) - 04:27, 25 March 2025
  • Thumbnail for Atmospheric refraction
    This refraction is due to the velocity of light through air decreasing (the refractive index increases) with increased density. Atmospheric refraction near...
    30 KB (3,746 words) - 06:04, 9 May 2025
  • Thumbnail for Victor Veselago
    this paper he was able to show that refractive index may also be negative. He hypothesized that negative refraction can occur if both the (electric) permittivity...
    14 KB (1,456 words) - 19:59, 8 November 2024
  • Thumbnail for Fermat's principle
    propagation of light, ordinary reflection, ordinary refraction, and the extraordinary refraction of "Iceland crystal" (calcite) – are also consequences...
    61 KB (8,179 words) - 04:46, 1 February 2025
  • Thumbnail for Reflection (physics)
    List of reflected light sources Negative refraction Ocean surface wave Reflection coefficient Reflectivity Refraction Ripple tank Signal reflection Snell's...
    18 KB (2,263 words) - 03:56, 10 March 2025
  • Thumbnail for Split-ring resonator
    for the synthesis of left-handed and negative refractive index media, where the necessary value of the negative effective permeability is due to the presence...
    36 KB (4,045 words) - 19:41, 22 May 2025
  • light reaching a negative index material through air would not cross the normal. Rather, it would bend the opposite way. Negative refraction was first reported...
    24 KB (2,619 words) - 11:10, 15 March 2025
  • used to refer to other lenses that provide a negative index of refraction. Flat lenses require a refractive index close to −1 over a broad angular range...
    14 KB (1,656 words) - 06:45, 13 April 2025
  • Total refraction occurs when an incident wave on an interface between two media with opposite refractive index signs is completely transmitted. There is...
    714 bytes (72 words) - 03:13, 12 April 2021
  • Thumbnail for Multiple-prism dispersion theory
    multiple-prism dispersion theory has been extended to include positive and negative refraction. Also, higher order phase derivatives have been derived using a Newtonian...
    11 KB (1,587 words) - 03:24, 18 March 2025
  • Thumbnail for Birefringence
    Birefringence, also called double refraction, is the optical property of a material having a refractive index that depends on the polarization and propagation...
    60 KB (6,595 words) - 10:58, 20 April 2025
  • generalized refraction equations for both positive and negative refraction, thus providing a clear link between diffraction theory and generalized refraction. From...
    16 KB (1,930 words) - 22:53, 3 October 2022
  • focuses on electromagnetic metamaterials, or materials with a negative index of refraction. Smith obtained his B.Sc. and Ph.D. in physics from the University...
    4 KB (377 words) - 01:43, 25 April 2025
  • shift depends on the refractive index of the medium a wave is traveling through. Some materials are capable of negative refraction, which should lead to...
    34 KB (4,288 words) - 07:46, 21 April 2025
  • Thumbnail for Cloak of invisibility
    Zhang. Nature advance online publication 11 August 2008. Optical Negative Refraction in Bulk Metamaterials of Nanowires by Jie Yao, Zhaowei Liu, Yongmin...
    23 KB (2,625 words) - 18:33, 20 August 2024
  • Thumbnail for Optical rotation
    the index of refraction n, defined as the speed of light (in free space) divided by its speed in the medium. The difference in the refractive indices between...
    39 KB (5,156 words) - 11:40, 20 April 2025
  • Thumbnail for F. J. Duarte
    diffraction, refraction, and reflection, in a generalized and unified quantum approach that includes positive and negative refraction. He also derived...
    30 KB (3,122 words) - 05:03, 8 May 2025
  • Thumbnail for Metamaterial cloaking
    However, negative refraction is not the effect that creates invisibility-cloaking. It is more accurate to say that gradations of refractive index, when...
    65 KB (7,379 words) - 14:29, 23 May 2025
  • Thumbnail for Nanorod
    PMID 22968228. Scholia has a profile for nanorod (Q2684948). Nanorods show negative refraction in near-IR (EE Times, December 5, 2005) [1] S. Ramanathan, S. Patibandla...
    16 KB (1,869 words) - 16:04, 23 May 2025