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Curve that winds around a central point
Archimedean spiral Hyperbolic spiral Fermat's spiral The lituus Logarithmic spiral Cornu spiral Spiral of Theodorus Fibonacci Spiral (golden spiral) The involute
Spiral
Topics referred to by the same term
around the point. Spiral may also refer to: Spiral galaxy, a type of galaxy in astronomy Spiral Dynamics, a theory of human development Spiral cleavage, a type
Spiral_(disambiguation)
Class of galaxy that has spiral structures extending from their cores
Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, form part of the Hubble
Spiral_galaxy
Self-similar curve related to golden ratio
In geometry, a golden spiral is a logarithmic spiral whose growth factor is φ, the golden ratio. That is, a golden spiral gets wider (or further from
Golden_spiral
Topics referred to by the same term
Look up spiral staircase in Wiktionary, the free dictionary. A spiral staircase is a type of stairway characterized by its helical shape Spiral Staircase
Spiral_Staircase
1994 studio album by Nine Inch Nails
The Downward Spiral is the second studio album by the American industrial rock band Nine Inch Nails. It was released on March 8, 1994, by Nothing Records
The_Downward_Spiral
American film by Darren Lynn Bousman
Spiral (also subtitled From the Book of Saw) is a 2021 American horror thriller film directed by Darren Lynn Bousman and written by Josh Stolberg and Peter
Spiral_(2021_film)
Visualization of the prime numbers
The Ulam spiral or prime spiral is a graphical depiction of the set of prime numbers, devised by mathematician Stanisław Ulam in 1963 and popularized in
Ulam_spiral
Spiral with constant distance from itself
The Archimedean spiral (also known as Archimedes' spiral, the arithmetic spiral) is a spiral named after the 3rd-century BC Greek mathematician Archimedes
Archimedean_spiral
Self-similar growth curve
spiral, equiangular spiral, or growth spiral is a self-similar spiral curve that often appears in nature. The first to describe a logarithmic spiral was
Logarithmic_spiral
Comics character
Spiral (Rita Wayword) is a supervillain appearing in American comic books published by Marvel Comics, usually those featuring the X-Men family of characters
Spiral_(character)
2026 thriller film by Paolo Strippoli
The Spiral (Italian: L'estranea, lit. 'The Stranger') is a 2026 thriller film co-written and directed by Paolo Strippoli. A co-production of Italy, France
The_Spiral_(film)
Galaxy containing the Solar System
individually distinguished by the naked eye. The Milky Way is a barred spiral galaxy with a D25 isophotal diameter estimated at 26.8 ± 1.1 kiloparsecs
Milky_Way
Earthwork sculpture by Robert Smithson
Spiral Jetty is a work of land art constructed in April 1970 that is considered to be the most important work by American sculptor Robert Smithson. Smithson
Spiral_Jetty
Curve whose curvature changes linearly
An Euler spiral is a curve whose curvature changes linearly with its curve length (the curvature of a circular curve is equal to the reciprocal of the
Euler_spiral
Model of human development
Spiral Dynamics is a model of human development that posits a discrete and linear series of "stages of development" that individuals, organizations, and
Spiral_Dynamics
Topics referred to by the same term
Look up death spiral in Wiktionary, the free dictionary. Death spiral may refer to: Aircraft flight: Graveyard spiral Spiral dive Death spiral (figure skating)
Death_spiral
Social feedback loop leading to extremism
Look up purity spiral in Wiktionary, the free dictionary. "Purity spiral" is a term for a form of infighting between activists and members of victim groups
Purity_spiral
Spiral-shaped regions of enhanced brightness within the galactic disc in spiral galaxies
Spiral arms are a defining feature of spiral galaxies. They manifest as spiral-shaped regions of enhanced brightness within the galactic disc. Typically
Spiral_arm
Book by Starhawk
The Spiral Dance: a Rebirth of the Ancient Religion of the Great Goddess is a book about Neopagan beliefs and practices written by Starhawk. It was first
The_Spiral_Dance
Spiral dive entered by a pilot due to spatial disorientation
names for this phenomenon include suicide spiral, deadly spiral, death spiral and vicious spiral. Graveyard spirals are most common at night or in poor weather
Graveyard_spiral
list of spirals includes named spirals that have been described mathematically. Mathematics portal Catherine wheel (firework) List of spiral galaxies
List_of_spirals
Spiral galaxy with a central bar-shaped structure composed of stars
barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars. Bars are found in about two thirds of all spiral galaxies
Barred_spiral_galaxy
Artificial island
Spiral Island was a floating artificial island built in Mexico by British artist Richart "Reishee" Sowa. It was destroyed by Hurricane Emily in 2005. A
Spiral_Island
System of stars and interstellar matter
visual characteristics such as elliptical, spiral, or irregular. The Milky Way is an example of a spiral galaxy. In addition to shape, galaxies may be
Galaxy
Political science and mass communication theory
The spiral of silence theory is a political science and mass communication theory which states that an individual's perception of the distribution of public
Spiral_of_silence
Economic concept
In macroeconomics, a wage–price spiral (or, conversely, a price–wage spiral) is an explanation for inflation, in which wage increases cause price increases
Wage–price_spiral
1977 EP by Buzzcocks
Spiral Scratch is the debut EP by the English punk rock band Buzzcocks, released on 28 January 1977 through New Hormones. Spiral Scratch and the album
Spiral_Scratch
Railway layout for steep climbs
A spiral (sometimes called a spiral loop or just loop) is a technique employed by railways to ascend steep hills. A railway spiral rises on a steady curve
Spiral_(railway)
Free party sound system
Spiral Tribe is an arts collective and free party sound system formed in 1990. It organised free parties, festivals and raves in the UK and later Europe
Spiral_Tribe
Polygonal curve made from right triangles
In geometry, the spiral of Theodorus (also called the square root spiral, Pythagorean spiral, or Pythagoras's snail) is a spiral composed of right triangles
Spiral_of_Theodorus
1998 Japanese film
Spiral (Japanese: らせん, Hepburn: Rasen) is a 1998 Japanese supernatural horror film and a sequel to Ring (1998). It is directed by George Iida and is based
Spiral_(1998_film)
1987 American TV series or program
Spiral Zone is a 1987 American science-fiction animated series produced by Atlantic/Kushner-Locke. Spiral Zone was animated by Japanese studio Visual
Spiral_Zone
Plane curve
mathematics of plane curves, a Cotes's spiral (also written Cotes' spiral and Cotes spiral) is one of a family of spirals classified by Roger Cotes. Cotes introduces
Cotes's_spiral
Ancient Greek mathematics book
On Spirals (Greek: Περὶ ἑλίκων) is a treatise by Archimedes, written around 225 BC. Notably, Archimedes employed the Archimedean spiral in this book to
On_Spirals
Symbol with three-fold rotational symmetry
either of a triple spiral exhibiting rotational symmetry or of other patterns in triplicate that emanate from a common center. The spiral design can be based
Triskelion
Spiral that surrounds equal area per turn
Fermat's spiral or parabolic spiral is a plane curve with the property that the area between any two consecutive full turns around the spiral is constant
Fermat's_spiral
Ants continuously walking in a circle
continuously rotating circle. This circle is commonly known as a “death spiral” because the ants might eventually die of exhaustion. It has been reproduced
Ant_mill
Software development process model
The spiral model is a risk-driven software development process model. Based on the unique risk patterns of a given project, the spiral model guides a team
Spiral_model
Index of articles associated with the same name
Mosques with a spiral minaret include: Great Mosque of Samarra, or Al-Malwiya Mosque (جامع الملوية 'Mosque of the Spiral one'), in Iraq Burmalı Mosque
Spiral_minaret
Plane spiral projected onto the surface of a cone
mathematics, a conical spiral, also known as a conical helix, is a space curve on a right circular cone, whose floor projection is a plane spiral. If the floor
Conical_spiral
Garden bed design
An herb spiral is a three dimensional garden bed for the cultivation of culinary herbs. The herb spiral is an example of permaculture design. It enables
Herb_spiral
Teaching technique
See also spiral model, a software development approach. The spiral approach is a technique often used in education where the initial focus of instruction
Spiral_approach
Variation of french fries
Curly fries, or twisted fries or spiral fries, are french fries cut into a spiral shape. Though they are sometimes said to have been invented by the Arby's
Curly_fries
Defunct gyro tower at Cedar Point
Space Spiral was a gyro tower built by Willy Bühler Space Towers of Berne, Switzerland, with a double-decker cabin provided by Von Roll. It was located
Space_Spiral
Skyscraper in Manhattan, New York
The Spiral, also known as 66 Hudson Boulevard, is a 66-floor, 1,031-foot (314 m) skyscraper with 2.85 million square feet (265,000 m2), on 34th Street
The_Spiral_(New_York_City)
Spiral asymptotic to a line
hyperbolic spiral is a type of spiral with a pitch angle that increases with distance from its center, unlike the constant angles of logarithmic spirals or decreasing
Hyperbolic_spiral
2019 American film
Spiral Farm is a 2019 American drama film directed by Alec Tibaldi, starring Piper De Palma, Amanda Plummer, Cosimo Fusco and Jade Fusco. Piper De Palma
Spiral_Farm
Spiral hashing, also known as Spiral Storage, is an extensible hashing algorithm. As in all hashing schemes, spiral hashing stores records in a varying
Spiral_hashing
Topics referred to by the same term
Spiral shell may refer to: Mollusc shells, of which some are spiral-shaped Gastropod shells, of which most are spiral-shaped Whorl (mollusc), a 360º turn
Spiral_shell
Railway in Australia
The Bethungra Spiral is a heritage-listed rail spiral on the Main Southern line near Bethungra, between Junee and Cootamundra. The spiral carries the northbound
Bethungra_Spiral
Type of RF antenna
A spiral antenna is a type of radio frequency antenna shaped as a spiral, first described in 1956. Archimedean spiral antennas are the most popular, while
Spiral_antenna
younger Population I stars. A spiral galaxy maintains its spiral arms due to density wave theory. Below is a list of notable spiral galaxies with their own
List_of_spiral_galaxies
2011 video game
Spiral Knights is a massively multiplayer online game created by Three Rings Design and now owned by Grey Havens. The free-to-play, Java-based game was
Spiral_Knights
Anatomical structure
The spiral (cochlear) ganglion is a group of neuron cell bodies in the modiolus, the conical central axis of the cochlea. These bipolar neurons innervate
Spiral_ganglion
Magic: The Gathering expansion block
Time Spiral is a Magic: The Gathering expert-level block consisting of the expansion sets Time Spiral (October 6, 2006), Planar Chaos (February 2, 2007)
Time_Spiral
American pop band
The Spiral Starecase was an American pop band, best known for its 1969 single "More Today Than Yesterday". Hailing from Sacramento, California, United
Spiral_Starecase
Building in Tokyo, Japan
Spiral, also known as the Wacoal Art Center, is a multi-use building in Aoyama, Tokyo, Japan, that was designed by architect Fumihiko Maki. It was commissioned
Spiral_(building)
2010 studio album by Kylesa
Spiral Shadow is the fifth full-length album by American sludge metal band Kylesa, released by Season of Mist on October 25, 2010 in Europe and October
Spiral_Shadow
Aerial phenomenon
Norwegian spiral anomaly of 2009 (Norwegian: det spiralformede lysmønsteret, "the spiral-form light pattern", det spiralformede lysfenomenet, "the spiral-form
2009_Norwegian_spiral_anomaly
Group dance in American Neopaganism
The spiral dance, also called the grapevine dance and the weaver’s dance, is a traditional group dance practiced in Neopaganism in the United States, especially
Spiral_dance
Heritage listed railway track and tunnel in New South Wales, Australia
The Cougal Spiral is a heritage-listed single track railway tunnel and spiral in Australia. The feature is located on the North Coast railway line in Australia
Cougal_Spiral
A spiral plater is an instrument used to dispense a liquid sample onto a Petri dish in a spiral pattern. Commonly used as part of a CFU count procedure
Spiral_plater
Spiral Earth is an online news channel and website, based in Cambridgeshire, England. It covers folk music, roots music and the alternative music scene
Spiral_Earth
Spiral galaxies with one spiral arm
A Magellanic spiral galaxy is a spiral galaxy with only one spiral arm. Magellanic spiral galaxies are classified as the type Sm (with sub-categories SAm
Magellanic_spiral
Barred spiral galaxy in the Local Group
The Andromeda Galaxy is a barred spiral galaxy and is the nearest major galaxy to the Milky Way. It was originally named the Andromeda Nebula and is cataloged
Andromeda_Galaxy
Two spirals represented by polar equations
In mathematics, Poinsot's spirals are two spirals represented by the polar equations r = a csch ( n θ ) {\displaystyle r=a\ \operatorname {csch} (n\theta
Poinsot's_spirals
Device for separating/sorting slurry or particles
The term spiral separator can refer to either a by density (wet spiral separators), or for a device for sorting particles by shape (dry spiral separators)
Spiral_separator
Part of a shark intestine
A spiral valve or scroll valve is the corkscrew-shaped lower portion of the intestine of some sharks, Acipenseriformes (sturgeon and paddlefish), rays
Spiral_valve
Section of North Island Main Trunk
Raurimu Spiral The Raurimu Spiral (Māori: Te Koru o Raurimu) is a single-track railway spiral, starting with a horseshoe curve, overcoming a 139-metre
Raurimu_Spiral
2008 single by Keane
"Spiralling" is a song released by Keane on 4 August 2008 at 10:59 (CEST) as the first single of their third album, Perfect Symmetry. It was released in
Spiralling
In mathematics, Waraszkiewicz spirals are subsets of the plane introduced by Waraszkiewicz (1932). Waraszkiewicz spirals give an example of an uncountable
Waraszkiewicz_spiral
Type of bone fracture
A spiral fracture (a.k.a. torsion fracture) is a bone fracture occurring when torque (a rotating force) is applied along the axis of a bone. Spiral fractures
Spiral_fracture
Circle packing arranged in spirals
In the mathematics of circle packing, a Doyle spiral is a pattern of non-crossing circles in the plane in which each circle is surrounded by a ring of
Doyle_spiral
Geometric transformation
Spiral similarity is a plane transformation in mathematics composed of a rotation and a dilation. It is used widely in Euclidean geometry to facilitate
Spiral_similarity
A Lentulo spiral is a dental instrument used to properly distribute root canal sealer and cement evenly throughout the root canal system, as when performing
Lentulo_spiral
Spiral (Spiral [adj.], Spirally), for a soloist with a shortwave receiver, is a composition by Karlheinz Stockhausen, written in 1968. It is Number 27
Spiral_(Stockhausen)
Spiral waves are travelling waves that rotate outward from a center in a spiral. They are a feature of many excitable media. Spiral waves have been observed
Spiral_wave
Pair of spiral conductors with metal balls at their ends
Riess spirals, or Knochenhauer spirals, are a pair of spirally wound conductors with metal balls at their ends. Placing one above the other forms an induction
Riess_spiral
In gridiron football, a spiral is the continuous in-flight rotation around the longitudinal axis of a football following its release from the hand of a
Spiral_(football)
Family of curves of the form r^n = a^n cos(nθ)
In algebraic geometry, the sinusoidal spirals are a family of curves defined by the equation in polar coordinates r n = a n cos ( n θ ) {\displaystyle
Sinusoidal_spiral
Metal joining technique
Spiral welding is a process where a continuous full penetration metal inert gas weld overlay is used to rebuild damage from wear, erosion, corrosion or
Spiral_welding
New Zealand women's publisher and art collective (1975–)
Spiral, also known as Spiral Collective or Spiral Collectives, is a New Zealand publisher and group of artist collectives established in 1975 with a focus
Spiral_(publisher)
1946 film by Robert Siodmak
The Spiral Staircase is a 1946 American psychological horror film directed by Robert Siodmak and starring Dorothy McGuire, George Brent, and Ethel Barrymore
The Spiral Staircase (1946 film)
The_Spiral_Staircase_(1946_film)
Class of galaxy between an elliptical galaxy and a spiral galaxy
E) and a spiral galaxy in galaxy morphological classification schemes. It contains a large-scale disc but does not have large-scale spiral arms. Lenticular
Lenticular_galaxy
A spiral puzzle is a word puzzle in the form of a spiral. The puzzle is formed of a long chain of letters, which spell out a list of clued words when read
Spiral_puzzle
Data visualization graphics of long-term trends of annual temperature anomalies
A climate spiral (sometimes referred to as a temperature spiral) is an animated data visualization graphic designed as a "simple and effective demonstration
Climate_spiral
African-American artist collective
Spiral was a collective of African-American artists initially formed by Romare Bearden, Charles Alston, Norman Lewis, and Hale Woodruff on July 5, 1963
Spiral_(arts_alliance)
Extinct volcano in Washington, United States
Spiral Butte is a cinder cone in Yakima County, Washington in the United States. The summit and most of the slopes are located within the William O. Douglas
Spiral_Butte
Skyscraper in Tel Aviv, Israel
The Spiral Tower is a planned 91-story skyscraper, set to reach a height of approximately 350 metres (1,150 ft). It will be located at the Azrieli Center
The_Spiral_Tower
Class of sailing dinghy
The Spiral is a type or class of sailing dinghy. It is similar to a Laser (dinghy), but is smaller and easier to manoeuvre on land and in water, and suited
Spiral_(dinghy)
Mechanical part
A spiral bevel gear is a bevel gear with helical teeth. The main application of this is in a vehicle differential, where the direction of drive from the
Spiral_bevel_gear
Former Roman Catholic church
owned museum and a wedding chapel. It is known for its unusual helix-shaped spiral staircase (the "Miraculous Stair"). It has been the subject of legend, and
Loretto_Chapel
Spiral galaxy in the constellation Triangulum
The Triangulum Galaxy is a spiral galaxy 2.878 million light-years (ly) from Earth in the constellation Triangulum. It is catalogued as Messier 33 or NGC
Triangulum_Galaxy
Galaxy type intermediate between a spiral galaxy and barred spiral galaxy
An intermediate spiral galaxy is a galaxy that is in between the classifications of a barred spiral galaxy and an unbarred spiral galaxy. It is designated
Intermediate_spiral_galaxy
2002 studio album by Manilla Road
Spiral Castle is the twelfth album by American heavy metal band Manilla Road, released in 2002 by Iron Glory Records. Although Atlantis Rising had been
Spiral_Castle
Type of bridge
A spiral bridge, loop bridge, helix bridge, or pigtail bridge is a road bridge which loops over its own road, allowing the road to climb rapidly. This
Spiral_bridge
Book binding style
including spiral coil, color coil, colorcoil, ez-coil, plastic coil, spiral binding, and coilbind. Documents bound with helical coil (usually called spiral coil)
Coil_binding
List of primary characters from Tengen Toppa Gurren Lagann
and fought the Anti-Spirals when they invaded his world. He became one of the four Spiral Generals, who commanded legions of Spiral Warriors charged with
List of Gurren Lagann characters
List_of_Gurren_Lagann_characters
Optical illusion
The Fraser spiral illusion is an optical illusion that was first described by the British psychologist Sir James Fraser (1863–1936) in 1908. The illusion
Fraser_spiral_illusion
travel, tourism, insurance
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