All articles starting with T
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Triangle Universities Nuclear Laboratory
The Triangle Universities Nuclear Laboratory (TUNL) is a Department of Energy Center of Excellence for nuclear physics, a four-university consortium based at Duke University in Durham, North Carolina.
Triangle wave
A triangle wave is a periodic waveform that rises and falls at constant, equal slopes, forming a continuous symmetric zigzag used as the carrier in PWM circuits.
Triangular decomposition
Triangular decomposition is a symbolic technique for solving polynomial systems by splitting the solution set into simpler components described by triangular sets, one variable at a time.
Triangular distribution
The triangular distribution is a continuous probability distribution on a bounded interval whose density rises linearly to a mode and falls linearly to a maximum value, defined by three parameters.
Triangular flow
Triangular flow is the third Fourier coefficient, v3, of particle emission angles in ultrarelativistic heavy-ion collisions, caused by random fluctuations in the initial collision zone's triangular shape.
Triangular lattice antiferromagnet
A triangular lattice antiferromagnet is a magnet whose spins sit on a triangular two-dimensional lattice with antiferromagnetic exchange, making it the canonical example of geometric frustration since the 1970s.
Triangular matrix
A triangular matrix is a square matrix with all zeros on one side of the main diagonal, upper or lower, whose eigenvalues are its diagonal entries.
Triangular number
A triangular number counts objects arranged in an equilateral triangle, equaling the sum 1 + 2 + ... + n; the first few are 0, 1, 3, 6, and 10.
Triangular numbers
A triangular number is the sum of the integers from 1 to n, equal to n(n+1)/2; the sequence begins 0, 1, 3, 6, 10, 15, 21.
Triangular prism
A triangular prism is a three-dimensional polyhedron with two parallel triangular bases joined by three rectangular side faces, giving 5 faces, 9 edges, and 6 vertices.
Triangular theory of love
Sternberg's triangular theory of love (1986) models love as intimacy, passion, and decision/commitment forming a triangle, yielding eight kinds of love and the Triangular Love Scale, validated cross-culturally.
Triangular trade
Triangular trade: the 16th-19th century Atlantic circuit linking Europe, West Africa, and the Americas, in which manufactured goods were traded for enslaved Africans carried via the Middle Passage, and colonial commodities like sugar returned to Europe.
Triangulated category
A triangulated category is an additive category with a shift and distinguished triangles abstracting mapping cones and long exact sequences, introduced by Verdier in 1967, with Puppe's independent 1962 axioms.
Triangulation
Triangulation in computer vision is the process of computing a point's 3D position by intersecting rays back-projected from two or more cameras with known geometry.
Triangulation (psychology)
Triangulation in psychology, a family-systems concept from Murray Bowen's theory, describes two feuding family members, usually parents, drawing a third person, most often a child, into their conflict.
Triangulation (social science)
Triangulation in social science is the use of more than one method, data source, investigator, or theory to study the same question, boosting confidence in findings.
Triangulene
Triangulene, also called Clar's hydrocarbon, is a triangular molecule of 22 carbon atoms in six fused benzene rings, hypothesized in 1950 and first made in 2017.
Triângulo
Triângulo (Triângulo Mineiro, Zona do Triângulo), western region of Minas Gerais, Brazil, bounded by the Grande and Paranaíba rivers; TMAP mesoregion of 66 municipalities, over 2 million people, main cities Uberaba and Uberlândia, agribusiness hub.
Triangulum
Triangulum is a small constellation of the northern sky, one of the 48 listed by Ptolemy, best known as the home of the Triangulum Galaxy, Messier 33.
Triangulum Galaxy
The Triangulum Galaxy, also known as Messier 33 or M33, is a spiral galaxy about 2.73 million light-years from Earth and the third-largest member of the Local Group.
Trianon
Trianon (board game) is a 1992 abstract strategy game by Hans van Maanen, played on a 5x5 board where players drop stones and lose by having 3 of their own stones on an orthogonal or diagonal line; Ludii identifier DLP.Games.1520.
Triantafyllos Chavakis
Triantafyllos Chavakis is a Greek-born German clinician-scientist and immunologist at TU Dresden who showed that trained innate immunity is initiated in bone marrow stem cells.
Triapenthenol
Triapenthenol (CAS 76608-88-3, EU ID 155, trade name Baronet) is a triazole plant growth regulator and gibberellin biosynthesis inhibitor used on oilseed rape; not approved in the EU, default MRL 0.01 mg/kg.
Triarchic theory of intelligence
Sternberg's triarchic theory of intelligence (1985) holds that intelligence comprises componential, experiential, and contextual subtheories, expressed as analytical, creative, and practical abilities, measured by the STAT and debated against g-factor psychometrics.
Triarylboranes
Triarylboranes are organoboron compounds of formula BAr3, in which three aryl groups bond to tricoordinate boron, making strong Lewis acids used in catalysis, sensors, OLEDs, and bio-imaging; tris(pentafluorophenyl)borane is the prominent member.
Triassic
The Triassic, the first period of the Mesozoic Era, ran from about 252 to 201 million years ago, saw the first dinosaurs, and opened after Earth's largest mass extinction.
Triassic amphibians
Triassic amphibians were dominated worldwide by large aquatic temnospondyl predators that recovered after the end-Permian extinction, while the earliest undisputed frogs appeared in the Early Triassic.
Triassic–Jurassic extinction
The Triassic–Jurassic extinction, also called the end-Triassic extinction, was a mass extinction about 201 million years ago, likely caused by massive CAMP volcanic eruptions as Pangea broke apart.
Triassic–Jurassic fern spore abnormalities
Triassic–Jurassic fern spore abnormalities are malformed fossil spores, up to 70% in some samples, marking environmental stress at the end-Triassic extinction about 201.6 million years ago.
Triasulfuron
Triasulfuron (CASRN 82097-50-5, C14H16ClN5O5S) is a sulfonylurea ALS-inhibiting herbicide for broadleaf and grassy weeds in wheat, barley, fallow, and rangeland; sold since 1987, water dispersible granules, persistent in alkaline soils with crop rotation restrictions.