 WMAP image of the anisotropic background cosmic radiation Anisotropy (the opposite of isotropy) is the property of being directionally dependent. Something which is anisotropic, may appear different, or have different characteristics in different directions. An example is the polarising lens in a pair of polarized sunglasses, in which if you hold the lens in one direction, polarized light streams through, whereas if you hold the lens in another direction, light is blocked. Wikipedia does not have an article with this exact name. ...
Wiktionary is a Wikimedia Foundation project intended to be a free wiki dictionary (hence: Wiktionary) (including thesaurus and lexicon) in every language. ...
Image File history File links Download high resolution version (2198x1274, 1278 KB)WMAP map of CMB anisotropy, from NASA.gov File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...
Image File history File links Download high resolution version (2198x1274, 1278 KB)WMAP map of CMB anisotropy, from NASA.gov File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ...
Artist depiction of the WMAP satellite at the L2 point The Wilkinson Microwave Anisotropy Probe (WMAP) is a NASA satellite whose mission is to survey the sky to measure the temperature of the radiant heat left over from the Big Bang. ...
Isotropy (the opposite of anisotropy) is the property of being independent of direction. ...
In electrodynamics, polarization (also spelled polarisation) is a property of waves, such as light and other electromagnetic radiation. ...
This article treats polarization in electrodynamics. ...
Fields of interest
Computer graphics In the field of computer graphics, an anisotropic surface will change in appearance as it is rotated about its geometric normal, as is the case with velvet. Anisotropic scaling occurs when something is scaled by different amounts in different directions. An example is down-scaling a 64×64-pixel texture to cover a 12×34-pixel rectangle; this is anisotropic filtering. Computer graphics (CG) is the field of visual computing, where one utilizes computers both to generate visual images synthetically and to integrate or alter visual and spatial information sampled from the real world. ...
A surface normal, or just normal to a flat surface is a three-dimensional vector which is perpendicular to that surface. ...
Velvet is a type of tufted fabric in which the cut threads are very evenly distributed, with a short dense pile, giving it its distinct feel. ...
Spherical texture mapping Texture mapping is a method of adding realism to a computer-generated graphic. ...
In geometry, a rectangle is defined as a quadrilateral polygon in which all four angles are right angles. ...
An illustration of texture filtering methods showing trilinear MIP map texture on the left and enhanced with anisotropic texture filtering on the right. ...
An anisotropic filter, on the other hand, is a filter with increasingly smaller interstitial spaces in the direction of filtration so that the proximal regions filter out larger particles and distal regions increasingly remove smaller particles, resulting in greater flow-through and more efficient filtration. The term filter may refer to: A device to separate mixtures. ...
In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ...
Region can be used to mean either: any more or less well-defined geographical area of a country or continent, defined by geography, culture or history in political geography, an administrative subdivision of a country or of the European Union. ...
In zootomy, several terms are used to describe the location of organs and other structures in the body of bilateral animals. ...
Physics
 A Plasma lamp, showing the anisotropic nature of plasmas, in this case, the phenomenon of filamentation Cosmologists use the term to describe the fluctuations in the background radiation left over after the big bang. The term refers to the difference in the temperature of the cosmic microwave background radiation with direction. ImageMetadata File history File links Download high resolution version (1589x1609, 1106 KB) Khamis R A A plasma lamp. ...
ImageMetadata File history File links Download high resolution version (1589x1609, 1106 KB) Khamis R A A plasma lamp. ...
An eight-inch (20 cm) diameter plasma globe The effect of a conducting object (such as a hand) in close proximity to the plasma globe glass The central electrode of a plasma globe. ...
A Plasma lamp, illustrating some of the more complex phenomena of a plasma, including filamentation A solar coronal mass ejection blasts plasma throughout the solar system. ...
Cosmology is the study of the large-scale structure and history of the universe. ...
Background radiation is the ionizing radiation from several natural radiation sources: sources in the Earth and from those sources that are incorporated in our food and water, which are incorporated in our body, and in building materials and other products that incorporate those radioactive sources; radiation sources from space (in...
According to the Big Bang theory, the universe emerged from an extremely dense and hot state (bottom). ...
In cosmology, the cosmic microwave background radiation (most often abbreviated CMB but occasionally CMBR, CBR or MBR) is a form of electromagnetic radiation discovered in 1965. ...
Physicists use the term to refer to some properties of plasmas. For example, a plasma may have a magnetic field oriented in a preferred direction, or show filamentation (such as that seen in lightning or a plasma globe) that is directional. Many famous physicists of the 20th and 21st century are found on the list of recipients of the Nobel Prize in physics. ...
A Plasma lamp, illustrating some of the more complex phenomena of a plasma, including filamentation A solar coronal mass ejection blasts plasma throughout the solar system. ...
Lightning is a powerful natural electrostatic discharge produced during a thunderstorm. ...
An eight-inch diameter plasma globe Plasma lamps are novelty items which were most popular in the 1980s. ...
An anisotropic liquid is one which has the fluidity of a normal liquid, but, unlike water or chloroform, which contain no structural ordering of the molecules, they have an average structural order relative to each other along their molecular axis. Liquid crystals are examples of anisotropic liquids. PEL-TWA (OSHA) 50 ppm (240 mg/m3) IDLH (NIOSH) 500 ppm Flash point non-flammable RTECS number FS9100000 Supplementary data page Structure & properties n, εr, etc. ...
Liquid crystals are a class of molecules that, under some conditions, inhabit a phase in which they exhibit isotropic, fluid-like behavior – that is, with little long-range ordering – but which under other conditions inhabit one or more phases with significant anisotropic structure and long-range ordering while still having...
Some materials conduct heat in a way that is isotropic, that is independent of spatial orientation around the heat source. It is more common for heat conduction to be anisotropic, which implies that detailed geometric modeling of typically diverse materials being thermally managed is required. The materials used to transfer and reject heat from the heat source in electronics are often anisotropic. Heat flow along perfectly insulated wire Heat conduction is the transmission of heat across matter. ...
The field of electronics is the study and use of systems that operate by controlling the flow of electrons (or other charge carriers) in devices such as thermionic valves and semiconductors. ...
Many crystals are anisotropic to light, and exhibit properties such as birefringence. Crystal optics describes light propagation in these media. It has been suggested that crystallization processes be merged into this article or section. ...
Prism splitting light Light is electromagnetic radiation with a wavelength that is visible to the eye (visible light) or, in a technical or scientific context, electromagnetic radiation of wavelengths that are studied in the field of optics. ...
A calcite crystal laid upon a paper with some letters showing the double refraction Birefringence, or double refraction, is the decomposition of a ray of light into two rays (the ordinary ray and the extraordinary ray) when it passes through certain types of material, such as calcite crystals, depending on...
Crystal optics is the branch of optics that describes the behaviour of light in anisotropic media, that is, media (such as crystals) in which light behaves differently depending on which direction the light is propagating. ...
Geology Geological formations where distinct layers of sedimentary material are disposited can exhibit electrical anisotropy. That is electrical conductivity in one direction e.g. parallel to a layer, is different to that in another e.g. perpendicular to a layer. This property is used in the gas and oil exploration industry to identify hydrocarbon-bearing sands in sequences of sand and shale. Sand bearing hydrocarbon assets have high resistivity (relatively low conductivity) whereas shales are much more conductive. Formation evaluation instruments measure this conductivity and resistivity and the results are used to help best site oil and gas wells. Geology (from Greek γη- (ge-, the earth) and λογος (logos, word, reason)) is the science and study of the Earth, its composition, structure, physical properties, history, and the processes that shape it. ...
Electrical conductivity is a measure of how well a material accommodates the transport of electric charge. ...
Oil Exploration is the search by petroleum geologists for hydrocarbon deposits beneath the Earths surface. ...
Patterns in the sand Sand is an example of a class of materials called granular matter. ...
Shale Shale is a fine-grained sedimentary rock whose original constituents were clays or muds. ...
Hydrocarbons are refined at oil refineries and processed at chemical plants In chemistry, a hydrocarbon is any chemical compound that consists only of the elements carbon (C) and hydrogen (H). ...
Bold text == In petroleum exploration and development, formation evaluation is used to determine whether a potential oil or gas field is commercially viable. ...
Electrical resistivity (also known as specific electrical resistance) is a measure indicating how strongly a material opposes the flow of electric current. ...
External links - Baker Atlas - Formation Evaluation
- Baker Atlas - Anisotropy and Resistivity Measurements
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