Cone
A cone (from the Greek κῶνος, Latin conus) is a basic geometrical shape; see cone (geometry).
Cone may also refer to:
Mathematics
- Cone (category theory), a family of morphisms resembling a geometric cone
- Cone (formal languages), an abstract family of languages that contains the languages with a regular grammar
- Cone (geometry), a three-dimensional geometric shape that tapers smoothly from a flat base to a point called the apex
- Cone (linear algebra), a subset of vector space closed under positive scaling
- Cone (topology) of a set X, namely the union of all line segments connecting a fixed point to points of X
- Conic bundle, an algebraic variety that appears as a solution of a Cartesian equation
- Conic constant, a quantity describing conic sections, and is represented by the letter K
- Conic section, any curve obtained by cutting a conical surface by an arbitrary plane
- Conical combination, a conical sum of a finite number of vectors
- Conical coordinates, a three-dimensional orthogonal coordinate system
- Conical function, functions which can be expressed in terms of Legendre functions of the first and second kind
- Conical surface, generated by a moving line with one fixed point
- Convex cone, a subset C of a vector space V is a convex cone if αx+βy belongs to C, for any positive scalars α, β, and any x, y in C
- Mapping cone, a construction Cf of topology, analogous to a quotient space
- Mapping cone (homological algebra) of a map of chain complexes
- Monge cone, a geometrical object associated to a first-order equation
- Nilpotent cone, the set of elements that act nilpotently in all representations of a finite-dimensional semisimple Lie algebra
- Projective cone, the union of all lines that intersect a projective subspace and an arbitrary subset of some other disjoint subspace
Engineering and physical science
- Antenna blind cone, the volume of space that cannot be scanned by an antenna
- Cone algorithm identifies surface particles quickly and accurately for three-dimensional clusters composed of discrete particles
- Cone beam reconstruction, a method of X-ray scanning in microtomography
- Cone calorimeter, a modern device used to study the fire behavior of small samples of various materials in condensed phase
- Cone clutch serves the same purpose as a disk or plate clutch
- Cone of depression occurs in an aquifer when groundwater is pumped from a well
- Cone penetration test (CPT), an in situ testing method used to determine the geotechnical engineering properties of soils
- Cone Penetrometer apparatus, an alternative method to the Casagrande Device in measuring the Liquid Limit of a soil sample
- Conical intersection of two potential energy surfaces of the same spatial and spin symmetries
- Conical measure, a type of graduated laboratory glassware with a conical cup and a notch on the top to facilitate pouring of liquids
- Conical mill (or conical screen mill), a machine used to reduce the size of material in a uniform manner
- Conical pendulum, a weight (or bob) fixed on the end of a string (or rod) suspended from a pivot
- Conical scanning, a system used in early radar units to improve their accuracy
- Helical cone beam computed tomography, a type of three-dimensional computed tomography
- Hertzian cone, the cone of force that propagates through a brittle, amorphous or cryptocrystalline solid material from a point of impact
- Nose cone, used to refer to the forwardmost section of a rocket, guided missile or aircraft
- Pyrometric cone, pyrometric devices that are used to gauge heatwork during the firing of ceramic materials
- Roller cone bit, a drill bit used for drilling through rock, for example when drilling for oil and gas
- Skid cone, a hollow steel or plastic cone placed over the sawn end of a log
- Speaker cone, the cone inside a loudspeaker that moves to generate sound
- Spinning cone columns are used in a form of steam distillation to gently extract volatile chemicals from liquid foodstuffs
People
- Bonnie Ethel Cone (1907–2003), an American educator best known as the founder of the University of North Carolina at Charlotte
- Carin Cone (born 1940), an American swimmer, Olympic medalist, world record holder, and gold medal winner from the Pan American Games
- Chadrick Cone (born 1983), an American football wide receiver for the Georgia Force in the Arena Football League
- Cone sisters: Claribel Cone (1864–1929) and Etta Cone (1870–1949), collectors and socialites
- David Cone (born 1963), a former Major League Baseball pitcher
- Edward T. Cone (1917–2004), an American music theorist and composer
- Fairfax M. Cone (1903–1977), former director of the American Association of Advertising Agencies
- Fred Cone (baseball) (1848–1909), pioneer professional baseball player
- Fred Cone (running back) (born 1926), former professional American football running back
- Fred P. Cone (1871–1948), the twenty-seventh governor of Florida (Frederick Preston)
- Jason McCaslin, nicknamed Cone, bassist for the Canadian band Sum 41
- James Hal Cone (born 1938), an advocate of Black liberation theology
- John Cone, an American professional wrestling referee
- John J. Cone, the fourth Supreme Knight of the Knights of Columbus from 1898 to 1899
- Mac Cone (born 1952), a Canadian show jumper
- Martin Cone, the 6th president of St. Ambrose College from 1930–1937
- Marvin Cone (1891–1965), an American painter
- Moses H. Cone (1857–1908), an American textile entrepreneur, conservationist, and philanthropist
- Reuben Cone (1788–1851), an important pioneer and landowner in Atlanta, Georgia
- Robert W. Cone, a major general in the United States Army, and Special Assistant to the Commanding General of TRADOC
- Sara Cone Bryant (born 1873), the author of various children's book in the early 20th century
- Spencer Cone Jones (1836–1915), the President of the Maryland State Senate, Mayor of Rockville, Maryland
- Spencer Houghton Cone (born 1785), US Baptist minister and president of the American and Foreign Bible Society
- Tim Cone, the American head coach of the Alaska Aces in the Philippine Basketball Association
Music, film, literature and art
- Cone Five, an indie noise-pop band from Winnipeg, Manitoba, active from 1999 to 2006
- Cone of Silence (1960 film), a 1960 film about the investigation into a series of jetliner crashes
- Cone of Silence, an experimental music group located in Phoenix, Arizona
- Honey Cone, an American R&B and soul singing girl group who was most famous for the #1 hit "Want Ads"
- Orton Cone Box Show, a biennial international ceramic art exhibition for small work
- Pine Cone (Fabergé egg), a jewelled enameled Easter egg made under the supervision of the Russian jeweller Peter Carl Fabergé in 1900
- Southern cone music, includes the music of Argentina, Uruguay and Chile
- Stamford Cone, a 14-metre-high cone built as a landmark feature for the Swiss Banking Corporation HQ in Stamford, Connecticut
- The Cone Gatherers, a novel by the Scottish writer Robin Jenkins, first published in 1955
- The Golden Pine Cone, a classic novel by Canadian author Catherine Anthony Clark
Business
- Cone Mills Corporation, a world leader in textile manufacturing of corduroy, flannel, denim and other cotton fabrics for most of the 20th century
Computing
- Cone (software), a text-based e-mail and news client for Unix-like operating systems
- Cone tracing, a derivative of the ray-tracing algorithm that replaces rays, which have no thickness, with cones
- Second-order cone programming, a library of routines that implements a predictor corrector variant of the semidefinite programming algorithm
Biology
- Cone cell, in anatomy, a type of light-sensitive cell found along with rods in the retina of the eye
- Cone dystrophy, an inherited ocular disorder characterized by the loss of cone cells
- Cone snail, a carnivorous mollusc of the family Conidae
- Cone-billed Tanager (Conothraupis mesoleuca), a species of bird in the Thraupidae family
- Conifer cone, a seed-bearing organ on conifer plants
- Growth cone, a dynamic, actin-supported extension of a developing axon seeking its synaptic target
- Witch-hazel cone gall aphid (Hormaphis hamamelidis), a minuscule insect, a member of the aphid superfamily
Astronomy
- Cone Nebula (also known as NGC 2264), an H II region in the constellation of Monoceros
- Ionization cone, cones of material extending out from spiral galaxies
Geography
- Cinder cone, a steep conical hill of volcanic fragments around and downwind from a volcanic vent
- Dirt cone, a feature of a glacier or snow patch, in which dirt forms a coating insulating the ice below
- Parasitic cone (or satellite cone) is a geographical feature found around a volcano
- Shatter cone, rare geological feature in the bedrock beneath meteorite impact craters or underground nuclear explosions
- Volcanic cone, among the simplest volcanic formations in the world
Mapping
Places
- Big Cone, a geyser in the West Thumb Geyser Basin of Yellowstone National Park in the USA
- Cone, Texas, an unincorporated community in Crosby County, Texas, United States
- Cone Islet, a small granite island in south-eastern Australia
- Fishing Cone, a geyser in the West Thumb Geyser Basin of Yellowstone National Park in the USA
- Niles Cone, a groundwater basin in Alameda County, California, USA
- Pink Cone Geyser, a geyser in the Lower Geyser Basin of Yellowstone National Park in the USA
- Southern Cone, a geographic region composed of the southernmost areas of South America, south of the Tropic of Capricorn
- Southern Cone Mesopotamian savanna (Argentine Mesopotamian grasslands), a flooded grassland ecoregion of Argentina
- Treble Cone, a commercial skifield near Wanaka, New Zealand
Buildings
- Red House Cone in Wordsley: a 27 m high conical brick structure, diameter 18 m, used for the production of glass
Mountains and volcanic formations
- Alcyone Cone, an extinct volcanic cone west of the head of Mariner Glacier in Victoria Land
- Anchor Cone, a mountain in western British Columbia, Canada on the south side of Lowe Inlet, Grenville Channel
- Cinder Cone (British Columbia), a cinder cone with a small crater on the west side of the Helm Glacier in Garibaldi Provincial Park
- Cinder Cone and the Fantastic Lava Beds, a cinder cone volcano in Lassen Volcanic National Park, Northern California in the USA
- Cinder Cone National Natural Landmark, in the Mojave National Preserve in southeastern California in the USA
- Cone Glacier Volcano, a cinder cone in the Boundary Ranges of the Coast Mountains in northwestern British Columbia, Canada
- Conical Range, a small mountain range in southwestern British Columbia, Canada, between Seymour Inlet and Belize Inlet
- Cracker Creek Cone, a small cinder cone in northwestern British Columbia
- Dardanelles Cone, a mountain peak in the Carson-Iceberg Wilderness of the Stanislaus National Forest in the Sierra Nevada, California
- Dragon Cone, a monogenetic cinder cone in Wells Gray Provincial Park, British Columbia
- Eve Cone, a well-preserved black cinder cone on the Big Raven Plateau, British Columbia, Canada
- Flourmill Cone, a cinder cone in Wells Gray Provincial Park in British Columbia, Canada
- Gabrielse Cone, a monogenetic cinder cone in the Tuya Volcanic Field in British Columbia, Canada
- Icefall Cone, a cinder cone in northern British Columbia, Canada
- Iskut Canyon Cone, a cinder cone of the Iskut-Unuk River Cones group in northwestern British Columbia, Canada
- Kana Cone, a red nested cinder cone in northern British Columbia, Canada northeast of Eve Cone in Mount Edziza Provincial Park
- Kena Cone, a cinder cone in northwestern British Columbia, Canada in the Snowshoe Lava Field of Mount Edziza Provincial Park
- Klastline Cone, a cinder cone in northwestern British Columbia, Canada near Mount Edziza in Mount Edziza Provincial Park
- Kostal Cone, a young cinder cone in southeastern British Columbia, Canada at the eastern end of Kostal Lake in the Shuswap Highland
- Lone Cone, an extinct cinder cone on the western peninsula of Meares Island, British Columbia, Canada
- Machmel River Cone, a cinder cone in the Pacific Ranges section of the Coast Mountains in British Columbia, Canada
- Mess Lake Cone, a cinder cone in northwestern British Columbia, Canada
- Moraine Cone, a cinder cone in northern British Columbia, Canada
- Nahta Cone, a cinder cone in northern British Columbia, Canada
- Nazko Cone, a small potentially active basaltic cinder cone in central British Columbia, Canada
- Opal Cone, a cinder cone located on the southeast flank of Mount Garibaldi in the Coast Mountains of British Columbia, Canada
- Pointed Stick Cone, a cinder cone in east-central British Columbia, Canada in Wells Gray Provincial Park
- Ridge Cone, a cinder cone in northern British Columbia, Canada
- Seconed Canyon Cone, a cinder cone in the Boundary Ranges of the Coast Mountains in northwestern British Columbia, Canada
- Ship Cone, a conical peak 1 mile (1.6 km) south of Townrow Peak on the Tilman Ridge in Allan Hills, Victoria Land
- Sidas Cone, one of the cinder cones located north on the Mount Edziza plateau in British Columbia, Canada
- Sleet Cone, a cinder cone in northern British Columbia, Canada
- Snippaker Creek Cone, a cinder cone of the Iskut-Unuk River Cones group in northwestern British Columbia, Canada
- Storm Cone, a cinder cone in northern British Columbia, Canada
- Triplex Cone, a cinder cone in northern British Columbia, Canada
- Tseax Cone, also called the Tseax River Cone or the Aiyansh Volcano
- Twin Cone, a cinder cone in northern British Columbia, Canada
- Upper Becker Creek Cone, a volcanic cone in the Upper Becker Creek area of Carbon Hill, Yukon Territory, Canada
- Ventana Double Cone, a prominent twin mountain top in the northern part of the Ventana Wilderness of the Los Padres National Forest
- Volcanic Creek Cone, a small cinder cone 20 km (12 mi) northeast of Atlin in northwestern British Columbia
- Walkout Creek Cone, a cinder cone in northwestern British Columbia, Canada
- Watson Lake Cone, a cinder cone in southern Yukon, Canada, located near the British Columbia-Yukon border
- Williams Cone, a satellite cone of Mount Edziza, located 36 kilometers east of Telegraph Creek
Subglacial mounds
- Enid Creek Cone, a subglacial mound in northwestern British Columbia, Canada, located in the Dark Mountain area
- King Creek Cone, a subglacial mound of the Iskut-Unuk River Cones group in northwestern British Columbia, Canada
- Little Eagle Cone, a subglacial mound in northwestern British Columbia, Canada, located in the Dark Mountain area
- Tennena Cone, a subglacial mound in northern British Columbia, Canada, southwest of Mount Edziza in Mount Edziza Provincial Park
- Tom MacKay Creek Cone, a subglacial mound in northwestern British Columbia, Canada
Chemistry
- Carbon nanocones, conical structures which are made predominantly from carbon and which have at least one dimension of the order one micrometer or smaller
Other
- Conical Asian hat, a simple style of straw hat originating in East and Southeast Asia
- Ice cream cone, an edible container in which ice cream is served, shaped like an inverted cone open at its top
- Snow cone, a dessert usually made of crushed or shaved ice, flavored with sweet, usually fruit-flavored, brightly colored syrup
- Traffic cone, a brightly colored cone-shaped plastic object commonly used as a temporary traffic barrier or warning sign
- USS Cone (DD-866), a Gearing-class destroyer of the United States Navy
- Elizabethan collar or e-collar, a device to keep an animal from licking or biting itself
References