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Location of a discrete degeneracy between two electronic states
In quantum chemistry, a conical intersection of two or more potential energy surfaces is the set of molecular geometry points where the potential energy
Conical_intersection
Mechanism of spontaneous symmetry breaking
earliest) examples in the literature of a conical intersection of potential energy surfaces. Conical intersections have received wide attention in the literature
Jahn–Teller_effect
Assumption that motions of nuclei and electrons can be separated
for which the two adiabatic states were coupled by a Jahn–Teller conical intersection. A nice fit between the symmetry-preserved single-state treatment
Born–Oppenheimer approximation
Born–Oppenheimer_approximation
Interaction between electronic and nuclear vibrational motion in a molecule
understanding of nonadiabatic processes, especially near points of conical intersections. The direct calculation of vibronic couplings used to be uncommon
Vibronic_coupling
Phase of a cycle
in the conical intersection of potential energy surfaces and in the Aharonov–Bohm effect. The geometric phase around the conical intersection involving
Geometric_phase
Plane spiral projected onto the surface of a cone
this case the conical spiral can be seen as the intersection curve of the cone with a helicoid. 2) The second diagram shows a conical spiral with a Fermat's
Conical_spiral
Quantum physics and chemistry phenomenon
means that the eigenvalues can coincide only at a single point (see conical intersection). This is particularly important in quantum chemistry. In the Born–Oppenheimer
Avoided_crossing
x_{1},x_{2},\dots ,x_{n}} in a real vector space, a conical combination, conic combination, conical sum, or weighted sum of these vectors is a vector of
Conical_combination
Excited dimeric molecule containing a noble gas
transfer state. Strong CT stabilisation has been shown to lead to a conical intersection of this exciplex state with the ground state in a balance of steric
Excimer
Physico-chemical phenomenon with biochemistry applications
to very low fluorescence quantum yields. The evolution toward the conical intersection is accompanied by conformational movements. An important part of
Intrinsic_DNA_fluorescence
Optical phenomenon
Conical refraction is an optical phenomenon in which a ray of light, passing through a biaxial crystal along certain directions, is refracted into a hollow
Conical_refraction
Solution method for linear differential equations
Semiclassical resonances for a two-level Schrödinger operator with a conical intersection, Asymptotic Analysis, 65, n.1-2 (2009), pp. 17-58. Setsuro Fujiié
WKB_approximation
Topics referred to by the same term
interest Cosine integral (standard mathematical symbols "Ci" and "ci") Conical intersection, the location of a discrete degeneracy between two electronic states
CI
American chemist
Martínez, J. Am. Chem. Soc. 127, 4560 (2005). doi:10.1021/ja043093j Conical Intersection Dynamics in Solution: The Chromophore of Green Fluorescent Protein
Todd_Martínez
British chemist and cognitive scientist (1923–2004)
the most important were his discovery of geometric phase at the conical intersection of potential energy surfaces, his introduction of the correlation
Christopher_Longuet-Higgins
Vitamin A aldehyde, a polyene chromophore
PMID 16459333. Send, Robert; Sundholm, Dage (2007). "Stairway to the conical intersection: A computational study of retinal isomerization". Journal of Physical
Retinal
Topics referred to by the same term
Coin3D, a 3D computer graphics application programming interface Conical intersection, or COIN Coin (surname) Coin (department store), an Italian department
Coin_(disambiguation)
Type of representation of molecular wave functions
couple the potential energy surfaces. Nearby an avoided crossing or conical intersection, these terms are substantive. Therefore one unitary transformation
Diabatic_representation
Geometric shape
called the lateral surface; if the lateral surface is unbounded, it is a conical surface. The axis of a cone is the straight line passing through the apex
Cone
Three-dimensional orthogonal coordinate system
and x-axes, respectively. The intersection between one of the cones and the sphere forms a spherical conic. The conical coordinates ( r , μ , ν ) {\displaystyle
Conical_coordinates
Italian psychiatrist and film director (1931–2017)
photo-stimulation determines the activation of the brain. The paper “Conical intersection dynamics of the primary photoisomerization event in vision” published
Massimo_Fagioli
observation of geometric-phase interference in dynamics around a conical intersection". Nature Chemistry. 15 (11): 1503–1508. arXiv:2211.07320. Bibcode:2023NatCh
2023_in_science
Absorption features in astronomical spectra
"Fluorescence of the perylene radical cation and an inaccessible D0/D1 conical intersection: An MMVB, RASSCF, and TD-DFT computational study". The Journal of
Diffuse_interstellar_bands
molecular dynamics software can treat non-adiabatic couplings at conical intersections, intersystem crossing induced by spin-orbit coupling, and laser
SHARC molecular dynamics software
SHARC_molecular_dynamics_software
optimization, saddle-point searches Automatic searches for the minima on conical intersection seams. Spin/orbit configuration interaction Quantum chemistry computer
Columbus_(software)
Semiclassical approach for molecular-spectrum simulations
Weingart O, Spillane KM, Manzoni C, Brida D, et al. (September 2010). "Conical intersection dynamics of the primary photoisomerization event in vision". Nature
Nuclear_ensemble_approach
Mechanism of spontaneous symmetry breaking
crossing of the two terms at the point of degeneracy (leading to conical intersections in more complicated cases), in the nondegenerate case with strong
Pseudo_Jahn–Teller_effect
Computational chemistry methods to simulate non-adiabatic processes
via TD-DFT and Localized Diabatization: Intersystem Crossings, Conical Intersections, and Phosphorescence". The Journal of Physical Chemistry C. 117
Mixed quantum-classical dynamics
Mixed_quantum-classical_dynamics
Computational chemistry software
Molecular Dynamics Method for localization and characterization of conical intersections and seams MOLCAS has interface to several computational codes, including
MOLCAS
Molecular dynamics simulation technique
successfully to understand dynamics of systems that include tunneling, conical intersections and electronic excitation. In practice, surface hopping is computationally
Surface_hopping
Brazilian chemist (born 1971)
molecules to quickly return to the ground state. In this mechanism, a conical intersection between the ground and the excited electronic states is formed by
Mario_Barbatti
Italian physicist (born 1976)
Kukura, P.; Mathies, R. A.; Garavelli, M.; Cerullo, G. (2010). "Conical intersection dynamics of the primary photoisomerization event in vision". Nature
Dario_Polli
Conical hole cut so a fastener can be inserted flush with the surface
the surface being generated may be a conical chamfer (plunging applications) or a beveled corner for the intersection of two planes (traversing applications)
Countersink
Cone with an elliptical base
bounded by the base or only to the lateral conic surface, a quadric called conical quadric or quadratic cone. In a three-dimensional Cartesian coordinate
Elliptic_cone
Plane curve: conic section
created from the intersection of a right circular conical surface and a plane parallel to another plane that is tangential to the conical surface. The graph
Parabola
French optical physicist (1788–1827)
intersect the refractive surface (assumed flat); then, through that intersection, tangent planes should be drawn to the inner sphere and spheroid (cf
Augustin-Jean_Fresnel
Locus of the zeros of a polynomial of degree two
"Ray - Quadric Intersection".{{cite web}}: CS1 maint: url-status (link) Lawlor, Orion (December 3, 2025). "Ray-Object Intersection for Planes, Spheres
Quadric
Set of points equidistant from a center
More significantly, Vitruvius (On Architecture, Vitr. 9.8) associated conical sundials with Dionysodorus (early 2nd century bce), and Dionysodorus, according
Sphere
Region between a revolved surface and oblique plane
axes intersect in four double ungulae. The bicylinder formed by the intersection had been measured by Archimedes in The Method of Mechanical Theorems
Ungula
Monument in Yogyakarta, Indonesia
monument is 25 meters. It was built in the shape of a cylindrical pole conical to the top, the bottom as a circular fence, while the top round. It was
Tugu_Yogyakarta
Castle ruin in Germany
Baden-Württemberg, Germany. The hill castle was built in the 11th century, on a conical hill between the Rems and Fils rivers (both tributaries of the Neckar)
Hohenstaufen_Castle
Anticrossings of diatomic energy curves have many similarities to the conical intersections of energy surfaces in polyatomic molecules. Bandrauk, André D.;
Bond_softening
Greek theoretical chemist
contributions to understanding the dynamics of excited molecules around conical intersections and method development to calculate such at the highest levels of
Spiridoula_Matsika
American theoretical chemist
by means of nonadiabatic coupling, spin–orbit interactions and conical intersections. Alexander's work is particularly important in understanding the
Millard_H._Alexander
molecular ions. Nonadiabatic interactions. Avoided crossings and conical intersections. Transition probabilities between two coupled potential energy surfaces
Jean-Claude_Lorquet
Type of topological space
differences Xi+i-Xi between sets in the filtration. There is also a local conical condition; there must be an almost smooth atlas where locally each little
Stratified_space
Systematic representation of the surface of a sphere or ellipsoid onto a plane
represented undistorted. If these lines are a parallel of latitude, as in conical projections, it is called a standard parallel. The central meridian is
Map_projection
Professor and Head of Physical Chemistry
2019-01-17. Fielding, Helen H. (2018). "Molecular movies filmed at conical intersections" (PDF). Science. 361 (6397): 30–31. Bibcode:2018Sci...361...30F
Helen_H._Fielding
Unbounded quadric surface
conic section as a slice of a quadratic form. Instead of a conical surface, one requires conical hypersurfaces in four-dimensional space with points p =
Hyperboloid
Cone- or frustum-shaped gears for shafts whose axes intersect
shafts intersect and the tooth-bearing faces of the gears themselves are conically shaped. Bevel gears are most often mounted on shafts that are 90 degrees
Bevel_gear
I, raised to the number of photons absorbed, giving I0 = const. Conical intersections of energy surfaces in polyatomic molecules share many similarities
Bond_hardening
Point in the convex hull of a set P in Rd, is the convex combination of d+1 points in P
is replaced by the conical hull. Let X1, ..., Xd be sets in Rd and let x be a point contained in the intersection of the conical hulls of all these d
Carathéodory's theorem (convex hull)
Carathéodory's_theorem_(convex_hull)
Mountain in eastern Africa
summit resembles worn teeth in a gum line (in contrast to the perfect conical summits of the adjacent mountains in this range). The peaks of Mount Sabyinyo
Mount_Sabyinyo
Cartographical (only) marker at 0°N, 0°E
an Autonomous Temperature Line Acquisition System (ATLAS) buoy that was conical in shape and 3.8 metres (12 ft) high. It was anchored by a cable to the
Null_Island
Structure on top of a roof, skyscraper or tower
A spire may have a square, circular, or polygonal plan, with a roughly conical or pyramidal shape. Spires are typically made of stonework or brickwork
Spire
Architectural term for an arched roof
tombs, also called beehive tombs, which were underground structures with conical vaults. This type of vault is one of the earliest evidences of curved brick
Vault_(architecture)
Objects of certain abelian categories associated to topological spaces
of solutions of holonomic D-modules. A key observation was that the intersection homology of Mark Goresky and Robert MacPherson could be described using
Perverse_sheaf
Convex hull of a finite set of points in a Euclidean space
polytope is a convex sum of its vertices (its "defining points"), plus a conical sum of the Euclidean vectors of its infinite edges (its "defining rays")
Convex_polytope
Curve traced by a point on a rod as one end is dragged along a line
annoying "honk" characteristic from previous horn designs, especially conical horns, and thus revitalized interest in the horn loudspeaker. Klipsch Audio
Tractrix
History of crystallography to 1895
separate solutions which rotated polarized light in opposite directions. Conical refraction is an optical phenomenon in which a ray of light, passing through
History of crystallography before X-rays
History_of_crystallography_before_X-rays
an addition made in 1911. The station is notable for the “witch’s hat” conical roof at one end of the building. The combined passenger/freight depot was
Greenville_Junction_station
Plane curve
An example gear application would be a device that winds thread onto a conical bobbin on a spinning machine. The bobbin would need to wind faster when
Ellipse
4-dimensional figure
4-dimensional equivalents of the conical surface in 3 dimensions. It is also named "spherical cone" because its intersections with hyperplanes perpendicular
Hypercone
Headland of Cape Peninsula, South Africa
shipping hazard in False Bay. Two other beacons in Simon's Town provide the intersection. The Cape of Good Hope saw an increase of ship activity after the 2021
Cape_of_Good_Hope
Muslim engineer and artist (1136–1206)
or face." Lynn Townsend White wrote: Western scholars had thought that conical valves first appeared in Leonardo's drawings, but al-Jazarl's pictures
Ismail_al-Jazari
Populated place in Burlington County, New Jersey, US
corners is at the intersection of Pemberton Road (County Route 630) and Arneys Mount Road (CR 668). The original name may have been "Conical Corner" based
Comical_Corner,_New_Jersey
In linear algebra, generated subspace
set of all finite linear combinations of the elements of S, and the intersection of all linear subspaces that contain S . {\displaystyle S.} It is often
Linear_span
Indigenous people of Northern Europe
environments. For reindeer migration and hunting, the lavvu is a temporary conical tent similar in structure to the tipi. The pulk, a boat-shaped sled pulled
Sámi_people
Public square and traffic intersection in Berlin, Germany
(German: [ˈpɔtsdamɐ plats] , Potsdam Square) is a public square and traffic intersection in the centre of Berlin, Germany, lying about 1 km (1,100 yd) south of
Potsdamer_Platz
surface pingo A periglacial landform consisting of a relatively large conical mound of soil-covered ice, commonly 30–50 metres (100–160 ft) high and
Glossary of geography terms (N–Z)
Glossary_of_geography_terms_(N–Z)
3D reconstruction technique
sampling a single ray per pixel, the technique fits a gaussian to the conical frustum cast by the camera. This improvement effectively anti-aliases across
Neural_radiance_field
Monument in Yuzhong, Chongqing, China
business district of Jiefangbei in Yuzhong District, Chongqing, at the intersection of Minzu Road, Minquan Road and Zourong Road, and is a landmark of Chongqing
Liberation Monument in Chongqing
Liberation_Monument_in_Chongqing
Field of architecture
buildings varied from island to island, but were generally round in plan and conical in the vertical elevation. The traditional hut features represent the organization
Indigenous_architecture
Former states in present-day Tanzania (c. 1600–1963)
beauty of the land. The indigenous Chagga houses were of two types: a conical, grass-thatched structure resembling a pointed haystack, and a flatter
Chagga_states
Stock character
with a close-fitting crown and wide round brim and, more rarely, with a conical shape like a dunce's cap. Pierrot's character developed from that of a
Pierrot
Catalan architect (1852–1926)
and it is remarkable for its double dome, with a parabolic interior and conical exterior, a solution typical of Byzantine art. For the gallery on the street
Antoni_Gaudí
Shaped charge designed to penetrate armor effectively
weapons in World War II. A conventional shaped charge generally has a conical metal liner that is forced by an explosive blast into a hypervelocity jet
Explosively_formed_penetrator
Road in US associated with strange events
either disappear or are not seen by others present. The Druidic temple: A conical stone structure just east of the road south of the reservoir was said by
Clinton_Road_(New_Jersey)
Pink cat-ear beanie hat
Pussyhat Project for reflecting white feminist interests more than intersectional feminism or wider radical activism. This critique says it is problematic
Pussyhat
Local government building in the United States
The Huron County Courthouse and Jail is located by a busy downtown intersection in Norwalk, Ohio, United States. The ground floor is composed of rusticated
Huron County Courthouse and Jail
Huron_County_Courthouse_and_Jail
Mathematical structure in differential geometry
foliation is identified with the foliation by concentric hyperboloids and conical surface in R 3 {\displaystyle \mathbb {R} ^{3}} (the only singular leaf
Poisson_manifold
Time-telling device
the equatorial bow, the armillary sphere, the cylindrical dial and the conical dial. However, other designs are equiangular, such as the Lambert dial
Sundial
Monsters in Dungeons & Dragons 3.5 edition
ISSN 1433-2892. Clements, Philip J. (December 2019). Dungeons & Discourse: Intersectional Identities in Dungeons & Dragons (PhD). Retrieved September 22, 2020
List of Dungeons & Dragons 3.5 edition monsters
List_of_Dungeons_&_Dragons_3.5_edition_monsters
Generalization of mass, length, area and volume
the term positive measure is used. Positive measures are closed under conical combination but not general linear combination, while signed measures are
Measure_(mathematics)
Genus of flowering plants
six tepals (undifferentiated sepals and petals), and a central disc to conical shaped corona. The flowers may hang down (pendant), or be erect. There
Narcissus_(plant)
Collection of buildings in Washington, D.C.
to the juncture of 13th Street NW and Pennsylvania Avenue NW) and the conical atrium on the building's east side. Federal employees working in the building
Federal_Triangle
the sites for temples or elite residences. Other mounds were built in conical or ridge-top forms. The culture reached peoples in settlements across the
List_of_Mississippian_sites
Curve on the sphere analogous to an ellipse or hyperbola
mathematics, a spherical conic or sphero-conic is a curve on the sphere, the intersection of the sphere with a concentric elliptic cone. It is the spherical analog
Spherical_conic
Geometric representation of material yield
space of principal stresses. It is a conical prism and K {\displaystyle K} determines the inclination angle of conical surface. Figure 6 shows Mohr–Coulomb
Yield_surface
Riemannian manifold with SU(n) holonomy
Chan, Yat-Ming (2004), Desingularizations of Calabi-Yau 3-folds with a conical singularity, arXiv:math/0410260, Bibcode:2004math.....10260C Greene, Brian
Calabi–Yau_manifold
Branch of mathematical statistics
connections. This growing field has established itself squarely at the intersection of several areas of mathematics, including, for instance, multilinear
Algebraic_statistics
Smallest convex set containing a given set
convex set that contains it. The convex hull may be defined either as the intersection of all convex sets containing a given subset of a Euclidean space, or
Convex_hull
Racial prejudice as a result of the COVID-19 pandemic
coronavirus-shaped piñata, which featured an Asian caricature wearing a conical hat and Fu Manchu mustache. These piñatas circulated in parts of Mexico
Xenophobia and racism related to the COVID-19 pandemic
Xenophobia_and_racism_related_to_the_COVID-19_pandemic
Mode of transport
passage through bridges, tunnels and other structures. The track guides the conical, flanged wheels, keeping the cars on the track without active steering
Rail_transport
Traditional religious beliefs of the Shabaks
holy shrines which closely resembled Yazidi holy shrines, which had a conical dome and twelve slits, representing the twelve imams. Shabaks often attended
Shabakism
Structure whose members are only in tension
tensile structures. Other forms are anticlastic saddles, various radial, conical tent forms and any combination of them. Pretension is tension artificially
Tensile_structure
Castle and fortress in Kamianets-Podilskyi, Ukraine
(Tenchynska and Lanckorońska) that were finished with specially designed conical vault to draw away the gases from the gunpowder stored there; Water Tower
Kamianets-Podilskyi_Castle
Mathematical idealization of the surface of a body
this excludes surfaces that have singularities, such as the vertex of a conical surface or points where a surface crosses itself. In classical geometry
Surface_(mathematics)
Limit of the tangent line at a point that tends to infinity
its asymptote at most at n−2 other points, by Bézout's theorem, as the intersection at infinity is of multiplicity at least two. For a conic, there are a
Asymptote
Geyser field located in the Andes Mountains, Chile
structures or floating rafts of bubbly mats. The mats have tufted, layered and conical textures and their colours include orange and olive green; they give the
El_Tatio
CONICAL INTERSECTION
CONICAL INTERSECTION
Boy/Male
Muslim/Islamic
Forgiving to conceal
Girl/Female
Indian
Successful; Logical Thinkers
Girl/Female
African, American, British, Christian, Danish, Dutch, English, French, German, Greek, Gujarati, Hindu, Indian, Italian, Kannada, Latin, Malayalam, Marathi, Netherlands, Portuguese, Romanian, Sindhi, Spanish, Swedish, Swiss, Tamil
Adviser; Solitary; Alone; Unique; A Wise Counsellor; Saint; Nun; Timekeeper; Noble; Aristocratic
Female
English
Latin name, possibly derived from the Latin word monere, MONICA means "advise, counsel."
Boy/Male
Australian, Celtic, Irish
High; Mighty
Girl/Female
Hindu
Counsel, Advisor
Girl/Female
Latin
Give.
Girl/Female
Chinese, Greek, Indian, Jamaican, Latin
Mixture of Brightness and Love
Girl/Female
Irish
Constant.
Girl/Female
British, Greek, Gujarati, Hindu, Indian, Romanian, Telugu
Beautiful
Girl/Female
Christian & English(British/American/Australian)
Counsellor
Girl/Female
English American Greek Latin Spanish
Boy/Male
Biblical
Strength of the Lord.
Boy/Male
Tamil
Intelligent, Logical
Boy/Male
Gujarati, Hindu, Indian, Sanskrit
Logical Science
Biblical
strength of the Lord
Boy/Male
Hindu, Indian
Logical
Girl/Female
American, Australian
People
Girl/Female
Australian, Indian, Italian, Latin
The Morning Star; Give; Form of Donna; Lady
Boy/Male
Indian
Intelligent, Logical
CONICAL INTERSECTION
CONICAL INTERSECTION
Boy/Male
Indian, Sanskrit
Wheel; Circle; Discus; The Sun
Boy/Male
Australian, Danish, French, German, Italian, Latin
Hammer; Warlike
Girl/Female
Tamil
Victorious, Winner
Girl/Female
Hindu, Indian
Beautiful Sound to Listen; Voice of Anklet; Duet; Music
Surname or Lastname
English
English : possibly an occupational name for a porter or carrier, from an agent derivative of Middle English hailen ‘to haul’, ‘to drag’, from Old French haler ‘to pull’.Slovenian : variant spelling of German Haller.
Boy/Male
Muslim/Islamic
Light of Ali
Boy/Male
Tamil
Umeshwar | உமேஷà¯à®µà®°Â
Lord Shiva
Boy/Male
Hindu
Iranian (Persian)
Boy/Male
Indian, Kannada, Tamil
Rain-bearing Cloud; Resourceful; Winner of the World
Girl/Female
Gujarati, Hindu, Indian, Sikh
Absorbed in Gods Love
CONICAL INTERSECTION
CONICAL INTERSECTION
CONICAL INTERSECTION
CONICAL INTERSECTION
CONICAL INTERSECTION
a.
Of or pertaining to logic; used in logic; as, logical subtilties.
a.
According to the rules of logic; as, a logical argument or inference; the reasoning is logical.
n.
Conic sections.
a.
Of or pertaining to a cone; as, conic sections.
a.
Nearly, but not exactly, conical.
a.
Of or pertaining to a sine; employing, or founded upon, sines; as, a sinical quadrant.
n.
A conic section.
a.
A combining form, meaning somewhat resembling a cone; as, conico-cylindrical, resembling a cone and a cylinder; conico-hemispherical; conico-subulate.
a.
Pertaining to the concha, or external ear; as, the conchal cartilage.
a.
Plane or flat on one side, and conical on the other.
a.
Given to sneering at rectitude and the conduct of life by moral principles; disbelieving in the reality of any human purposes which are not suggested or directed by self-interest or self-indulgence; as, a cynical man who scoffs at pretensions of integrity; characterized by such opinions; as, cynical views of human nature.
a.
Alt. of Conical
a.
Exciting mirth; droll; laughable; as, a comical story.
a.
Having a mixture of seriousness and sport; serious and comical.
a.
Having the form of, or resembling, a geometrical cone; round and tapering to a point, or gradually lessening in circumference; as, a conic or conical figure; a conical vessel.
a.
Conical, but having the apex downward; inversely conical.
a.
Skilled in logic; versed in the art of thinking and reasoning; as, he is a logical thinker.
n.
Of or pertaining to a place; limited; logical application; as, a topical remedy; a topical claim or privilege.
a.
Having the same foci; as, confocal quadrics.
a.
Pertaining to irony; containing, expressing, or characterized by, irony; as, an ironical remark.