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Polonium hydride (also known as polonium dihydride , hydrogen polonide , or polane ) is a chemical compound with the formula Po H 2 . It is a liquid at room temperature, the second hydrogen chalcogenide with this property after water . It is very unstable chemically and tends to decompose into elemental polonium and hy... | https://en.wikipedia.org/wiki/PoH2 |
Polonium monoxide (also known as polonium(II) oxide ) is a chemical compound with the formula Po O . It is one of three oxides of polonium , the other two being polonium dioxide ( PoO 2 ) and polonium trioxide ( PoO 3 ). It is an interchalcogen .
Polonium monoxide is a black solid. It is formed during the radiolysis o... | https://en.wikipedia.org/wiki/PoO |
Polonium dioxide (also known as polonium(IV) oxide ) is a chemical compound with the formula Po O 2 . It is one of three oxides of polonium , the other two being polonium monoxide (PoO) and polonium trioxide (PoO 3 ). It is a pale yellow crystalline solid at room temperature . Under lowered pressure (such as a vacuum )... | https://en.wikipedia.org/wiki/PoO2 |
Polonium trioxide (also known as polonium(VI) oxide ) is a chemical compound with the formula Po O 3 . It is one of three oxides of polonium , the other two being polonium monoxide (PoO) and polonium dioxide (PoO 2 ). It is an interchalcogen that has so far only been detected in trace amounts. [ 1 ] [ 2 ]
It has been ... | https://en.wikipedia.org/wiki/PoO3 |
Po is a word that precedes and signals a provocation. A provocation is an idea which moves thinking forward to a new place from where new ideas or solutions may be found. Po is also an interjection , aimed at obtaining further clarifications without agreeing or disagreeing.
The term po was first created by Edward de B... | https://en.wikipedia.org/wiki/Po_(lateral_thinking) |
PocketGenie was an embedded wireless application developed for two-way pagers in 1997. At the time WAP was commonplace for mobile services; PocketGenie utilized HTML and URL links. [ 2 ] [ 3 ] It was the first commercial wireless service for RIM (BlackBerry) and Motorola. [ 4 ]
WolfeTech was founded by Surya Jayaweera... | https://en.wikipedia.org/wiki/PocketGenie |
PocketMail was a very small and inexpensive mobile computer , with a built-in acoustic coupler , developed by PocketScience.
PocketMail was developed by the company PocketScience and used technology developed by NASA. [ 1 ] This was the first ever mass-market mobile email. The hardware cost around US$100 and the serv... | https://en.wikipedia.org/wiki/PocketMail |
A pocket comparator is an optical device for measuring and inspection comprising a loupe and a reticle . [ 1 ] The instrument was developed and manufactured by the Bell & Howell Company, but similar instruments of other names are made by other manufacturers. [ 2 ] [ 3 ]
It is used for:
Measurements are performed by b... | https://en.wikipedia.org/wiki/Pocket_comparator |
Pocket filters are filters used in HVAC applications [ 1 ] to remove dust from ambient air . They are commonly used as final filters in commercial applications or as prefilters for HEPA filters in hospitals in the Pharmaceutical Industry .
Pocket filters were historically produced from glass fiber media, however in re... | https://en.wikipedia.org/wiki/Pocket_filter |
A pocket forest is created by planting native trees and shrubs in close proximity as a means of rapidly restoring native plant species in damaged ecosystems. While forests naturally grow through a primary stage and then a secondary stage before reaching their climax stage , pocket forests are created by a dense plantin... | https://en.wikipedia.org/wiki/Pocket_forest |
A pocket prairie is a small, artificially created, self-sustaining area of land where forbs and plants predominate. [ 1 ] Oftentimes these plants are native. Pocket prairies are typically found in urban and suburban areas where there exists a lack of vegetation and wildlife (e.g. vacant lots, backyards, green spaces). ... | https://en.wikipedia.org/wiki/Pocket_prairie |
Pocklington's algorithm is a technique for solving a congruence of the form
where x and a are integers and a is a quadratic residue .
The algorithm is one of the first efficient methods to solve such a congruence. It was described by H.C. Pocklington in 1917. [ 1 ]
(Note: all ≡ {\displaystyle \equiv } are taken to m... | https://en.wikipedia.org/wiki/Pocklington's_algorithm |
Pocosin is a type of palustrine wetland with deep, acidic, sandy, peat soils. [ 1 ] Groundwater saturates the soil except during brief seasonal dry spells and during prolonged droughts . Pocosin soils are nutrient-deficient ( oligotrophic ), especially in phosphorus . [ 2 ]
Pocosins occur in the southern portions of t... | https://en.wikipedia.org/wiki/Pocosin |
In computing , Podman ( pod manager ) is an open source Open Container Initiative (OCI)-compliant [ 2 ] container management tool from Red Hat used for handling containers, images , volumes , and pods on the Linux operating system , [ 3 ] with support for macOS and Microsoft Windows via a virtual machine . [ 4 ] Based ... | https://en.wikipedia.org/wiki/Podman |
Podospora anserina is a filamentous ascomycete fungus from the order Sordariales . It is considered a model organism for the study of molecular biology of senescence (aging), prions , sexual reproduction, and meiotic drive . [ 1 ] [ 2 ] It has an obligate sexual and pseudohomothallic life cycle. It is a non-pathogenic ... | https://en.wikipedia.org/wiki/Podospora_anserina |
Podsolisation is an extreme form of leaching which causes the eluviation of iron and aluminium sesquioxides . [ 1 ]
The process generally occurs in areas where precipitation is greater than evapotranspiration . The minerals are removed by a process known as leaching .
When organic material is broken down nutrients a... | https://en.wikipedia.org/wiki/Podsolisation |
Pohlke's theorem is the fundamental theorem of axonometry . It was established 1853 by the German painter and teacher of descriptive geometry Karl Wilhelm Pohlke . The first proof of the theorem was published 1864 by the German mathematician Hermann Amandus Schwarz , who was a student of Pohlke. Therefore the theorem i... | https://en.wikipedia.org/wiki/Pohlke's_theorem |
Poimapper is an on-site data collection , sharing and analysing software. [ 1 ] [ 2 ]
The mobile application is used to collect data and update data. By uploading data to a cloud server it is shared among other mobile and office workers. [ 3 ]
Poimapper is developed by Pajat Solutions Ltd. Pajat Solutions was founded... | https://en.wikipedia.org/wiki/Poimapper |
In mathematics, and especially topology , a Poincaré complex (named after the mathematician Henri Poincaré ) is an abstraction of the singular chain complex of a closed , orientable manifold .
The singular homology and cohomology groups of a closed, orientable manifold are related by Poincaré duality . Poincaré dualit... | https://en.wikipedia.org/wiki/Poincaré_complex |
In the mathematical field of geometric topology , the Poincaré conjecture ( UK : / ˈ p w æ̃ k ær eɪ / , [ 2 ] US : / ˌ p w æ̃ k ɑː ˈ r eɪ / , [ 3 ] [ 4 ] French: [pwɛ̃kaʁe] ) is a theorem about the characterization of the 3-sphere , which is the hypersphere that bounds the unit ball in four-dimensional space.
Original... | https://en.wikipedia.org/wiki/Poincaré_conjecture |
In mathematics , the Poincaré duality theorem, named after Henri Poincaré , is a basic result on the structure of the homology and cohomology groups of manifolds . It states that if M is an n -dimensional oriented closed manifold ( compact and without boundary), then the k th cohomology group of M is isomorphic to the... | https://en.wikipedia.org/wiki/Poincaré_duality |
The Poincaré group , named after Henri Poincaré (1905), [ 1 ] was first defined by Hermann Minkowski (1908) as the isometry group of Minkowski spacetime . [ 2 ] [ 3 ] It is a ten-dimensional non-abelian Lie group that is of importance as a model in our understanding of the most basic fundamentals of physics .
The Poin... | https://en.wikipedia.org/wiki/Poincaré_group |
In mathematics , the Poincaré inequality [ 1 ] is a result in the theory of Sobolev spaces , named after the French mathematician Henri Poincaré . The inequality allows one to obtain bounds on a function using bounds on its derivatives and the geometry of its domain of definition. Such bounds are of great importance in... | https://en.wikipedia.org/wiki/Poincaré_inequality |
In mathematics , particularly in dynamical systems , a first recurrence map or Poincaré map , named after Henri Poincaré , is the intersection of a periodic orbit in the state space of a continuous dynamical system with a certain lower-dimensional subspace, called the Poincaré section , transversal to the flow of the s... | https://en.wikipedia.org/wiki/Poincaré_map |
A Poincaré plot , named after Henri Poincaré , is a graphical representation used to visualize the relationship between consecutive data points in time series to detect patterns and irregularities in the time series, revealing information about the stability of dynamical systems , providing insights into periodic orbit... | https://en.wikipedia.org/wiki/Poincaré_plot |
In mathematics and physics , the Poincaré recurrence theorem states that certain dynamical systems will, after a sufficiently long but finite time, return to a state arbitrarily close to (for continuous state systems), or exactly the same as (for discrete state systems), their initial state.
The Poincaré recurrence ti... | https://en.wikipedia.org/wiki/Poincaré_recurrence_theorem |
In mathematics , the Poincaré separation theorem , also known as the Cauchy interlacing theorem , gives some upper and lower bounds of eigenvalues of a real symmetric matrix B T AB that can be considered as the orthogonal projection of a larger real symmetric matrix A onto a linear subspace spanned by the columns of B ... | https://en.wikipedia.org/wiki/Poincaré_separation_theorem |
In number theory , a Poincaré series is a mathematical series generalizing the classical theta series that is associated to any discrete group of symmetries of a complex domain , possibly of several complex variables . In particular, they generalize classical Eisenstein series . They are named after Henri Poincaré .
... | https://en.wikipedia.org/wiki/Poincaré_series_(modular_form) |
In algebraic topology , a Poincaré space is an n -dimensional topological space with a distinguished element μ of its n th homology group such that taking the cap product with an element of the k th cohomology group yields an isomorphism to the ( n − k )th homology group. [ 1 ] The space is essentially one for which Po... | https://en.wikipedia.org/wiki/Poincaré_space |
In mathematics , the Poincaré–Bendixson theorem is a statement about the long-term behaviour of orbits of continuous dynamical systems on the plane, cylinder, or two-sphere. [ 1 ]
Given a differentiable real dynamical system defined on an open subset of the plane, every non-empty compact ω -limit set of an orbit , whi... | https://en.wikipedia.org/wiki/Poincaré–Bendixson_theorem |
In symplectic topology and dynamical systems , Poincaré–Birkhoff theorem (also known as Poincaré–Birkhoff fixed point theorem and Poincaré's last geometric theorem ) states that every area-preserving, orientation-preserving homeomorphism of an annulus that rotates the two boundaries in opposite directions has at least ... | https://en.wikipedia.org/wiki/Poincaré–Birkhoff_theorem |
In mathematics, the Poincaré–Miranda theorem is a generalization of intermediate value theorem , from a single function in a single dimension, to n functions in n dimensions. It says as follows:
The theorem is named after Henri Poincaré — who conjectured it in 1883 — and Carlo Miranda — who in 1940 showed that it is e... | https://en.wikipedia.org/wiki/Poincaré–Miranda_theorem |
In mathematics , Poinsot's spirals are two spirals represented by the polar equations
where csch is the hyperbolic cosecant , and sech is the hyperbolic secant . [ 1 ] They are named after the French mathematician Louis Poinsot .
This geometry-related article is a stub . You can help Wikipedia by expanding it . | https://en.wikipedia.org/wiki/Poinsot's_spirals |
Point-in-time recovery ( PITR ) in the context of computers involves systems, often databases , whereby an administrator can restore or recover a set of data or a particular setting from a time in the past. [ 1 ] [ 2 ] [ 3 ] Note for example Windows 's capability to restore operating-system settings from a past date (f... | https://en.wikipedia.org/wiki/Point-in-time_recovery |
The curved point-normal triangle , in short PN triangle , is an interpolation algorithm to retrieve a cubic Bézier triangle from the vertex coordinates of a regular flat triangle and normal vectors . The PN triangle retains the vertices of the flat triangle as well as the corresponding normals. For computer graphics ap... | https://en.wikipedia.org/wiki/Point-normal_triangle |
In a cyclic order , such as the real projective line , two pairs of points separate each other when they occur alternately in the order. Thus the ordering a b c d of four points has ( a,c ) and ( b,d ) as separating pairs. This point-pair separation is an invariant of projectivities of the line.
The concept was descr... | https://en.wikipedia.org/wiki/Point-pair_separation |
In computer vision , pattern recognition , and robotics , point-set registration , also known as point-cloud registration or scan matching , is the process of finding a spatial transformation ( e.g., scaling , rotation and translation ) that aligns two point clouds . The purpose of finding such a transformation include... | https://en.wikipedia.org/wiki/Point-set_registration |
A triangulation of a set of points P {\displaystyle {\mathcal {P}}} in the Euclidean space R d {\displaystyle \mathbb {R} ^{d}} is a simplicial complex that covers the convex hull of P {\displaystyle {\mathcal {P}}} , and whose vertices belong to P {\displaystyle {\mathcal {P}}} . [ 1 ] In the plane (when P {\displayst... | https://en.wikipedia.org/wiki/Point-set_triangulation |
In telecommunications , point-to-multipoint communication ( P2MP , PTMP or PMP ) is communication which is accomplished via a distinct type of one-to-many connection, providing multiple paths from a single location to multiple locations. [ 1 ]
Point-to-multipoint telecommunications is typically used in wireless Intern... | https://en.wikipedia.org/wiki/Point-to-multipoint_communication |
Point-to-point laser technology (PPLT) [ 1 ] refers to a technology that enables a user or surveyor to survey or capture a building's geometry in real time or while on site by translating laser range finder data directly into a Computer-aided design (CAD) or building information models (BIM) work station.
Most commonl... | https://en.wikipedia.org/wiki/Point-to-point_laser_technology |
In geometry , a point is an abstract idealization of an exact position , without size, in physical space , [ 1 ] or its generalization to other kinds of mathematical spaces . As zero-dimensional objects, points are usually taken to be the fundamental indivisible elements comprising the space, of which one-dimensional c... | https://en.wikipedia.org/wiki/Point_(geometry) |
The Point Cloud Library ( PCL ) is an open-source library of algorithms for point cloud processing tasks and 3D geometry processing , such as occur in three-dimensional computer vision . The library contains algorithms for filtering, feature estimation, surface reconstruction, 3D registration , [ 5 ] model fitting , ob... | https://en.wikipedia.org/wiki/Point_Cloud_Library |
A point accepted mutation — also known as a PAM — is the replacement of a single amino acid in the primary structure of a protein with another single amino acid, which is accepted by the processes of natural selection . This definition does not include all point mutations in the DNA of an organism. In particular, silen... | https://en.wikipedia.org/wiki/Point_accepted_mutation |
In geometry , a point at infinity or ideal point is an idealized limiting point at the "end" of each line.
In the case of an affine plane (including the Euclidean plane ), there is one ideal point for each pencil of parallel lines of the plane. Adjoining these points produces a projective plane , in which no point can... | https://en.wikipedia.org/wiki/Point_at_infinity |
An SS7 point code is an address for the SS7 telephone switching system. It is similar to an IP address in an IP network. It is a unique address for a node (Signaling Point, or SP), used in MTP layer 3 to identify the destination of a message signal unit (MSU).
Message contain an OPC (Originating Point Code) and a DPC... | https://en.wikipedia.org/wiki/Point_code |
In geometry , a point group is a mathematical group of symmetry operations ( isometries in a Euclidean space ) that have a fixed point in common. The coordinate origin of the Euclidean space is conventionally taken to be a fixed point, and every point group in dimension d is then a subgroup of the orthogonal group O( d... | https://en.wikipedia.org/wiki/Point_group |
In computational geometry , the point-in-polygon ( PIP ) problem asks whether a given point in the plane lies inside, outside, or on the boundary of a polygon . It is a special case of point location problems and finds applications in areas that deal with processing geometrical data, such as computer graphics , compute... | https://en.wikipedia.org/wiki/Point_in_polygon |
A point mutation is a genetic mutation where a single nucleotide base is changed, inserted or deleted from a DNA or RNA sequence of an organism's genome. [ 1 ] Point mutations have a variety of effects on the downstream protein product—consequences that are moderately predictable based upon the specifics of the mutatio... | https://en.wikipedia.org/wiki/Point_mutation |
A point of delivery ( PoD ) is "a module of network, compute, storage, and application components that work together to deliver networking services. The PoD is a repeatable design pattern , and its components maximize the modularity, scalability, and manageability of data centers." [ 1 ]
The modular design principle h... | https://en.wikipedia.org/wiki/Point_of_delivery_(networking) |
A point of interest ( POI ) is a specific point location that someone may find useful or interesting. An example is a point on the Earth representing the location of the Eiffel Tower , or a point on Mars representing the location of its highest mountain , Olympus Mons . Most consumers use the term when referring to ho... | https://en.wikipedia.org/wiki/Point_of_interest |
Point of use water filters are used in individual houses or offices to provide filtration of potable water close to the point of consumption. [ 1 ] The related topic, point-of-use water treatment describes full-scale water treatment options and technologies designed to serve communities when municipal water treatment f... | https://en.wikipedia.org/wiki/Point_of_use_water_filter |
The point of zero charge (pzc) is generally described as the pH at which the net electrical charge of the particle surface (i.e. adsorbent 's surface) is equal to zero. This concept has been introduced in the studies dealing with colloidal flocculation to explain why pH is affecting the phenomenon. [ 1 ]
A related con... | https://en.wikipedia.org/wiki/Point_of_zero_charge |
A point particle , ideal particle [ 1 ] or point-like particle (often spelled pointlike particle ) is an idealization of particles heavily used in physics . Its defining feature is that it lacks spatial extension ; being dimensionless, it does not take up space . [ 2 ] A point particle is an appropriate representation ... | https://en.wikipedia.org/wiki/Point_particle |
Point plotting is an elementary mathematical skill required in analytic geometry . Invented by René Descartes and originally used to locate positions on military maps , this skill is now assumed of everyone who wants to locate grid 7A on any map.
Using point plotting, one associates an ordered pair of real numbers ( x... | https://en.wikipedia.org/wiki/Point_plotting |
In probability and statistics , point process notation comprises the range of mathematical notation used to symbolically represent random objects known as point processes , which are used in related fields such as stochastic geometry , spatial statistics and continuum percolation theory and frequently serve as mathemat... | https://en.wikipedia.org/wiki/Point_process_notation |
A point source is a single identifiable localized source of something. A point source has a negligible extent, distinguishing it from other source geometries. Sources are called point sources because, in mathematical modeling , these sources can usually be approximated as a mathematical point to simplify analysis.
The... | https://en.wikipedia.org/wiki/Point_source |
In mathematics , a pointed set [ 1 ] [ 2 ] (also based set [ 1 ] or rooted set [ 3 ] ) is an ordered pair ( X , x 0 ) {\displaystyle (X,x_{0})} where X {\displaystyle X} is a set and x 0 {\displaystyle x_{0}} is an element of X {\displaystyle X} called the base point [ 2 ] (also spelled basepoint ). [ 4 ] : 10–11
Maps... | https://en.wikipedia.org/wiki/Pointed_set |
In mathematics , a pointed space or based space is a topological space with a distinguished point, the basepoint . The distinguished point is just simply one particular point, picked out from the space, and given a name, such as x 0 , {\displaystyle x_{0},} that remains unchanged during subsequent discussion, and is ke... | https://en.wikipedia.org/wiki/Pointed_space |
Pointer Telocation was a publicly traded company, headquartered in Israel , that developed automatic vehicle location systems and provided roadside automotive service. Its shares were traded on the NASDAQ Capital Market and were listed on the Tel Aviv Stock Exchange until 2012, and then again starting in April 2016. In... | https://en.wikipedia.org/wiki/Pointer_Telocation |
In quantum Darwinism and similar theories, pointer states are quantum states , sometimes of a measuring apparatus, if present, that are less perturbed by decoherence than other states, and are the quantum equivalents of the classical states of the system after decoherence has occurred through interaction with the envir... | https://en.wikipedia.org/wiki/Pointer_state |
Pointman is a seated user interface for controlling one's avatar in a 3D virtual environment . It combines head tracking , a gamepad , and sliding foot pedals to provide positional control over many aspects of the avatar's posture. [ 1 ] [ 2 ] Pointman was developed by the US Naval Research Laboratory (NRL) to support... | https://en.wikipedia.org/wiki/Pointman_(user_interface) |
The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths ) used in navigation and cartography . A compass rose is primarily composed of four cardinal directions — north , east , south , and west —each separated by 90 degrees , and secondarily divided by four ordinal (intercard... | https://en.wikipedia.org/wiki/Points_of_the_compass |
In mathematics , the qualifier pointwise is used to indicate that a certain property is defined by considering each value f ( x ) {\displaystyle f(x)} of some function f . {\displaystyle f.} An important class of pointwise concepts are the pointwise operations , that is, operations defined on functions by applying the ... | https://en.wikipedia.org/wiki/Pointwise |
In mathematics , the qualifier pointwise is used to indicate that a certain property is defined by considering each value f ( x ) {\displaystyle f(x)} of some function f . {\displaystyle f.} An important class of pointwise concepts are the pointwise operations , that is, operations defined on functions by applying the ... | https://en.wikipedia.org/wiki/Pointwise_order |
PoisonIvy is a remote access trojan that enables key logging, screen capturing, video capturing, file transfers, system administration, password theft, and traffic relaying. [ 1 ] It was created around 2005 by a Chinese hacker [ 2 ] and has been used in several prominent hacks, including a breach of the RSA SecurID aut... | https://en.wikipedia.org/wiki/PoisonIvy_(trojan) |
The Poison Prevention Packaging Act of 1970 ( PPPA ); ( Pub. L. 91-601 , 84 Stat. 1670-74) was signed into law by U.S. President Richard Nixon on December 30, 1970. It was enacted by the 91st United States Congress . This law required the use of child-resistant packaging for prescription drugs, over-the-counter (OTC) d... | https://en.wikipedia.org/wiki/Poison_Prevention_Packaging_Act_of_1970 |
Poison exons (PEs); also called premature termination codon (PTC) exons or nonsense-mediated decay (NMD) exons] are a class of cassette exons that contain PTCs. Inclusion of a PE in a transcript targets the transcript for degradation via NMD. PEs are generally highly conserved elements of the genome and are thought to ... | https://en.wikipedia.org/wiki/Poison_exon |
The poison laboratory of the Soviet secret services , alternatively known as Laboratory 1 , Laboratory 12 , and Kamera (which means "The Cell" in Russian ), was a covert research-and-development facility of the Soviet secret police agencies . Prior to the dissolution of the Soviet Union, the laboratory manufactured and... | https://en.wikipedia.org/wiki/Poison_laboratory_of_the_Soviet_secret_services |
A poison message refers to a client–server model issue, where a client machine tries to send a message to the server and fails too many times (the actual amount of "too many" is variable).
The behavior toward poison messages varies - they are either discarded, create a service request event, or initiate other failure ... | https://en.wikipedia.org/wiki/Poison_message |
Poisoning is the harmful effect which occurs when toxic substances are introduced into the body. [ 1 ] The term "poisoning" is a derivative of poison , a term describing any chemical substance that may harm or kill a living organism upon ingestion . [ 2 ] Poisoning can be brought on by swallowing, inhaling, injecting o... | https://en.wikipedia.org/wiki/Poisoning |
On 20 August 2020, Russian opposition leader and anti-corruption activist Alexei Navalny was poisoned with the Novichok nerve agent and as a result, he was hospitalized in serious condition. During a flight from Tomsk to Moscow , he became ill and was taken to a hospital in Omsk after an emergency landing there, and th... | https://en.wikipedia.org/wiki/Poisoning_of_Alexei_Navalny |
The poisoning of Sergei and Yulia Skripal , also known as the Salisbury Poisonings , was a botched assassination attempt to poison Sergei Skripal , a former Russian military officer and double agent for the British intelligence agencies in the city of Salisbury , England on 4 March 2018. [ 5 ] [ 6 ] Sergei and his daug... | https://en.wikipedia.org/wiki/Poisoning_of_Sergei_and_Yulia_Skripal |
In materials science and solid mechanics , Poisson's ratio (symbol: ν ( nu )) is a measure of the Poisson effect , the deformation (expansion or contraction) of a material in directions perpendicular to the specific direction of loading . The value of Poisson's ratio is the negative of the ratio of transverse strain to... | https://en.wikipedia.org/wiki/Poisson's_ratio |
In probability theory , the law of rare events or Poisson limit theorem states that the Poisson distribution may be used as an approximation to the binomial distribution , under certain conditions. [ 1 ] The theorem was named after Siméon Denis Poisson (1781–1840). A generalization of this theorem is Le Cam's theorem .... | https://en.wikipedia.org/wiki/Poisson_limit_theorem |
In probability theory , The Poisson scatter theorem describes a probability model of random scattering . It implies that the number of points in a fixed region will follow a Poisson distribution .
Let there exist a chance process realized by a set of points (called hits) over a bounded region K ∈ R 2 {\displaystyle K\... | https://en.wikipedia.org/wiki/Poisson_scatter_theorem |
In mathematics , the Poisson summation formula is an equation that relates the Fourier series coefficients of the periodic summation of a function to values of the function's continuous Fourier transform . Consequently, the periodic summation of a function is completely defined by discrete samples of the original funct... | https://en.wikipedia.org/wiki/Poisson_summation_formula |
The Poisson–Boltzmann equation describes the distribution of the electric potential in solution in the direction normal to a charged surface. This distribution is important to determine how the electrostatic interactions will affect the molecules in solution.
It is expressed as a differential equation of the electric ... | https://en.wikipedia.org/wiki/Poisson–Boltzmann_equation |
Poka-yoke ( ポカヨケ , [poka joke] ) is any mechanism in a process that helps an equipment operator to avoid mistakes and defects by preventing, correcting, or drawing attention to human errors as they occur. [ 1 ] It is a Japanese term that means "mistake-proofing" or "error prevention", and is also sometimes referred to... | https://en.wikipedia.org/wiki/Poka-yoke |
Pokhozhaev's identity is an integral relation satisfied by stationary localized solutions to a nonlinear Schrödinger equation or nonlinear Klein–Gordon equation . It was obtained by S.I. Pokhozhaev [ 1 ] and is similar to the virial theorem . This relation is also known as G.H. Derrick's theorem . Similar identities ca... | https://en.wikipedia.org/wiki/Pokhozhaev's_identity |
See text
Pokkesviricetes is a class of viruses . [ 1 ]
The class, Pokkesviricetes , is derived from pockes , the Middle English word for pox as in referring to the disease associated to certain members of Poxviridae .
The following orders are recognized:
This virus -related article is a stub . You can help Wikipedi... | https://en.wikipedia.org/wiki/Pokkesviricetes |
In physical chemistry , the Polanyi potential theory, also called Polanyi's potential theory of adsorption or Eucken–Polanyi potential theory , is a model of adsorption proposed independently by Michael Polanyi and Arnold Eucken . Under this model, adsorption can be measured through the equilibrium between the chemical... | https://en.wikipedia.org/wiki/Polanyi_potential_theory |
Polar Science is a quarterly peer-reviewed scientific journal covering research related to the polar regions of the Earth and other planets. [ 1 ] It is published by Elsevier on behalf of the National Institute of Polar Research (Japan). It covers a wide range of fields, including atmospheric science , oceanography , g... | https://en.wikipedia.org/wiki/Polar_Science |
In chemistry , polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole moment , with a negatively charged end and a positively charged end.
Polar molecules must contain one or more polar bonds due to a difference in electronegativity between the bonded atoms. ... | https://en.wikipedia.org/wiki/Polar_bond |
In information theory , polar codes are a linear block error-correcting codes . The code construction is based on a multiple recursive concatenation of a short kernel code which transforms the physical channel into virtual outer channels. When the number of recursions becomes large, the virtual channels tend to either ... | https://en.wikipedia.org/wiki/Polar_code_(coding_theory) |
In the celestial equatorial coordinate system Σ(α, δ) in astronomy , polar distance ( PD ) is an angular distance of a celestial object on its meridian measured from the celestial pole , similar to the way declination (dec, δ) is measured from the celestial equator .
Polar distance in celestial navigation is the angle... | https://en.wikipedia.org/wiki/Polar_distance_(astronomy) |
Polar ecology is the relationship between plants and animals in a polar environment. Polar environments are in the Arctic and Antarctic regions. Arctic regions are in the Northern Hemisphere , and it contains land and the islands that surrounds it. Antarctica is in the Southern Hemisphere and it also contains the land ... | https://en.wikipedia.org/wiki/Polar_ecology |
In mathematics , the polar coordinate system specifies a given point in a plane by using a distance and an angle as its two coordinates . These are
The distance from the pole is called the radial coordinate , radial distance or simply radius , and the angle is called the angular coordinate , polar angle , or azimuth .... | https://en.wikipedia.org/wiki/Polar_graph |
A polar metal , metallic ferroelectric , [ 1 ] or ferroelectric metal [ 2 ] is a metal that contains an electric dipole moment . Its components have an ordered electric dipole. Such metals should be unexpected, because the charge should conduct by way of the free electrons in the metal and neutralize the polarized char... | https://en.wikipedia.org/wiki/Polar_metal |
A polar organic chemical integrative sampler (POCIS) is a passive sampling device which allows for the in situ collection of a time-integrated average of hydrophilic organic contaminants developed by researchers with the United States Geological Survey in Columbia, Missouri . [ 1 ] POCIS provides a means for estimating... | https://en.wikipedia.org/wiki/Polar_organic_chemical_integrative_sampler |
Polar overdominance is a unique form of inheritance originally described in livestock, with relevant examples in humans [ 1 ] and mice being discovered shortly after. The term polar is used to describe this type of overdominance because the phenotype of the heterozygote is more prevalent than the other genotypes . This... | https://en.wikipedia.org/wiki/Polar_overdominance |
In geometry, a polar point group is a point group in which there is more than one point that every symmetry operation leaves unmoved. [ 1 ] The unmoved points will constitute a line, a plane, or all of space.
While the simplest point group, C 1 , leaves all points invariant, most polar point groups will move some, bu... | https://en.wikipedia.org/wiki/Polar_point_group |
Polar seas is a collective term for the Arctic Ocean (about 4-5 percent of Earth's oceans ) and the southern part of the Southern Ocean (south of Antarctic Convergence , about 10 percent of Earth's oceans). In the coldest years, sea ice can cover around 13 percent of the Earth's total surface at its maximum, but out of... | https://en.wikipedia.org/wiki/Polar_seas |
The polar surface area ( PSA ) or topological polar surface area ( TPSA ) of a molecule is defined as the surface sum over all polar atoms or molecules, primarily oxygen and nitrogen , also including their attached hydrogen atoms.
PSA is a commonly used medicinal chemistry metric for the optimization of a drug's abili... | https://en.wikipedia.org/wiki/Polar_surface_area |
Polaris Networks is a networking software company founded in 2003 by some employees of Agilent Technologies of Santa Clara, California . [ 1 ] Its headquarters are in Chicago , and it has an overseas office in Kolkata . [ 2 ] It focuses on developing networking protocol software, and its products primarily include wire... | https://en.wikipedia.org/wiki/Polaris_Networks |
Polaris Partners is a venture capital firm active in the field of healthcare and biotechnology companies. The company has offices in Boston, Massachusetts , New York, New York and San Francisco, California . [ 3 ] [ 4 ]
Polaris Partners was founded in 1996 by Jon Flint , Terry McGuire , Steve Arnold . [ 5 ] [ 6 ] [ 7 ... | https://en.wikipedia.org/wiki/Polaris_Partners |
Polariton superfluid is predicted to be a state of the exciton-polaritons system that combines the characteristics of lasers with those of excellent electrical conductors. [ 1 ] [ 2 ] Researchers look for this state in a solid state optical microcavity coupled with quantum well excitons . The idea is to create an ensem... | https://en.wikipedia.org/wiki/Polariton_superfluid |
Polaritonics is an intermediate regime between photonics and sub-microwave electronics (see Fig. 1). In this regime, signals are carried by an admixture of electromagnetic and lattice vibrational waves known as phonon- polaritons , rather than currents or photons . Since phonon-polaritons propagate with frequencies in ... | https://en.wikipedia.org/wiki/Polaritonics |
In developmental biology , an embryo is divided into two hemispheres: the animal pole and the vegetal pole within a blastula . The animal pole consists of small cells that divide rapidly, in contrast with the vegetal pole below it. In some cases, the animal pole is thought to differentiate into the later embryo itself,... | https://en.wikipedia.org/wiki/Polarity_in_embryogenesis |
Polarity symbols are a notation for electrical polarity , found on devices that use direct current (DC) power, when this is or may be provided from an alternating current (AC) source via an AC adapter . The adapter typically supplies power to the device through a thin electrical cord which terminates in a coaxial powe... | https://en.wikipedia.org/wiki/Polarity_symbols |
Polarizability usually refers to the tendency of matter, when subjected to an electric field , to acquire an electric dipole moment in proportion to that applied field. It is a property of particles with an electric charge . When subject to an electric field, the negatively charged electrons and positively charged atom... | https://en.wikipedia.org/wiki/Polarizability |
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