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Surface of revolution with a hole in the middle
In mathematics, a toroid is a surface of revolution with a hole in the middle. The axis of revolution passes through the hole and so does not intersect
Toroid
Topics referred to by the same term
Look up toroidal in Wiktionary, the free dictionary. Toroidal describes something which resembles or relates to a torus or toroid: Toroidal coordinates
Toroidal
Type of electrical device
Toroidal inductors and transformers are inductors and transformers which use magnetic cores with a toroidal (ring or donut) shape. They are passive electronic
Toroidal inductors and transformers
Toroidal_inductors_and_transformers
Planet in the shape of a toroidal or doughnut shape
A toroidal planet is a hypothetical type of telluric exoplanet with a toroidal or doughnut shape. While no firm theoretical understanding as to how toroidal
Toroidal_planet
Doughnut-shaped surface of revolution
the revolved curve is not a circle, the surface is called a toroid, as in a square toroid. Real-world objects that approximate a torus of revolution include
Torus
Finnish electric car manufacturer
Toroidion was a Finnish start-up company domiciled in Pohja, Raseborg. On March 3, 2022, the company filed for bankruptcy. In 2015, Toroidion introduced
Toroidion
Type of electromagnetic dipole
In electromagnetism, a toroidal moment is an independent term in the multipole expansion of the electromagnetic field which is distinct from magnetic and
Toroidal_moment
A compact toroid (CT) is a type of plasmoid, a class of toroidal plasma configuration that is self-stable, and which does not need magnet coils running
Compact_toroid
Electrical resonant transformer circuit invented by Nikola Tesla
(L2) resonates with stray capacitance (C2) and the capacitance of the toroid's metal electrode attached to the high-voltage terminal. The peculiar design
Tesla_coil
Type of propeller design
A toroidal propeller is a type of propeller that is ring-shaped with each blade forming a closed loop. The propellers are significantly quieter at audible
Toroidal_propeller
Partition of a toroidal surface into polygons
In geometry, a toroidal polyhedron is a polyhedron which is also a toroid (a g-holed torus), having a topological genus (g) of 1 or greater. Notable examples
Toroidal_polyhedron
Graph able to be embedded on a torus
In the mathematical field of graph theory, a toroidal graph is a graph that can be embedded on a torus. In other words, the graph's vertices and edges
Toroidal_graph
Technique in mathematics for representing solenoidal vector fields
In vector calculus, a topic in pure and applied mathematics, a poloidal–toroidal decomposition is a restricted form of the Helmholtz decomposition. It is
Poloidal–toroidal decomposition
Poloidal–toroidal_decomposition
developed a technology for maintaining small stable plasma toroids called electron spiral toroids (ESTs) which remain stable in Earth's atmosphere without
Electron_spiral_toroid
Device for measuring alternating current
sometimes referred to as a counter-wound Rogowski. Other approaches use a full toroid geometry that has the advantage of a central excitation not exciting standing
Rogowski_coil
Concept in algebraic geometry
In algebraic geometry, a toroidal embedding is an open embedding of algebraic varieties that locally looks like the embedding of the open torus into a
Toroidal_embedding
Three-dimensional orthogonal coordinate system
Toroidal coordinates are a three-dimensional orthogonal coordinate system that results from rotating the two-dimensional bipolar coordinate system about
Toroidal_coordinates
US Air Force plasma railgun experiment
The ultimate goal of the MARAUDER program was to accelerate highly dense toroids containing plasma to high speeds. Such a system could be used for "hypervelocity
MARAUDER
Coordinate system relative to a torus
The terms toroidal and poloidal refer to directions relative to a torus of reference. They describe a three-dimensional coordinate system in which the
Toroidal and poloidal coordinates
Toroidal_and_poloidal_coordinates
Protein structure
A toroid repeat is a protein fold composed of repeating subunits, arranged in circular fashion to form a closed structure. In the case when the N- and
Toroid_repeat_proteins
List of efforts toward artificial nuclear fusion
by the mirror effect. The toroidal geometries can be further subdivided according to whether the machine itself has a toroidal geometry, i.e., a solid core
List_of_fusion_experiments
V=32, E=36, F=12, H=6. 7-connected Toroid (genus 5), with six 1-holed faces. V=40, E=72, F=30, H=6. 2-connected Toroid (genus 2) with two 2-holed-faces
Polygon_with_holes
3-dimensional object
the product topology. A standard way to visualize a solid torus is as a toroid, embedded in 3-space. However, it should be distinguished from a torus,
Solid_torus
Linear accelerator
insulating spacers and accelerate sheet armatures. Coaxial railguns accelerate toroidal plasma armatures using a hollow outer conductor and a central, concentric
Plasma_railgun
Model of subatomic particles
The toroidal ring model, known originally as the Parson magneton or magnetic electron, is a physical model of subatomic particles. It is also known as
Toroidal_ring_model
Inflatable water toy
donut, floatie, inner tube, or, in the United States, a lifesaver) is a toroid-shaped (hence the name "ring" or "doughnut") inflatable water toy. The swim
Swim_ring
Surface created by rotating a curve about an axis
where the axis of revolution does not intersect the surface, is called a toroid. For example, when a rectangle is rotated around an axis parallel to one
Surface_of_revolution
1997 FIRST Robotics Competition game
Toroid Terror was the 1997 game for the FIRST Robotics Competition. This was the first year that FRC had a regional event outside its origins in New Hampshire;
Toroid_Terror
Type of rocket engine
Several versions of the design exist, differentiated by their shapes. In the toroidal aerospike the spike is bowl-shaped with the exhaust exiting in a ring around
Aerospike_engine
the toroidal dipole needs to be taken into account. Toroidal dipole moments are odd under parity and time-reversal symmetries. Dynamic toroidal dipole
Dynamic_toroidal_dipole
Compact astronomical body
Eddington limit are often referred to as polish donuts due to their thick, toroidal shape that resembles that of a donut. Quasar accretion disks are expected
Black_hole
Topics referred to by the same term
short sub-sequence of a cDNA sequence Electron spiral toroid, a claimed small stable plasma toroid Electronic sell-through, a method of media distribution
Est
Star at the centre of the Solar System
internal toroidal magnetic field to the external poloidal field, and sunspots diminish in number and size. At solar-cycle minimum, the toroidal field is
Sun
Fusion-energy-related US design study
The Toroidal Fusion Core Experiment (TFCX) was a US design study for a tokamak fusion experiment in the mid-1980s. It was intended to achieve ignition
Toroidal Fusion Core Experiment
Toroidal_Fusion_Core_Experiment
Very compact quasi-stellar radio source
relatively small, approximately 10−3 parsecs in size. There is a larger opaque toroid extending several parsecs from the black hole, containing a hot gas with
Blazar
CERN LHC experiment
Lepton and Energy Measurements) and ASCOT (Apparatus with Super Conducting Toroids) collaborations merged their efforts to build a single, general-purpose
ATLAS_experiment
Type of reflecting telescope
A toroidal mirror is a reflector whose surface is a section of a torus, defined by two radii of curvature. Such reflectors are easier to manufacture than
Toroidal_reflector
Automotive transmission technology
ratio of the transmission. Toroidal CVTs can generally withstand higher torque loads than a pulley-based CVT. In some toroidal systems, the direction of
Continuously variable transmission
Continuously_variable_transmission
Engine configuration
engine, vibratory engine when the pistons oscillate instead of rotate, or toroidal engine based on the shape of the "cylinder". Many swing-piston engines
Swing-piston_engine
Maximal instantaneous input current drawn by an electrical device when first turned on
larger than the rated transformer current can flow for several cycles. Toroidal transformers, using less copper for the same power handling, can have up
Inrush_current
A Toroidal expansion joint is a metallic assembly that consists of a series of toroidal convolutions which are circular tubes wrapped around pipe ends
Toroidal_expansion_joint
Type of network topology
is a torus, and the network is called "toroidal". When the number of nodes along each dimension of a toroidal network is 2, the resulting network is called
Grid_network
Voltage booster electronic circuit
components and how they are connected. This example uses a red LED. A ferrite toroid is wound to form a coil with primary (white) and feedback (green) windings
Joule_thief
Device for prevention of corona discharge on high-voltage equipment
a corona ring, more correctly referred to as an anti-corona ring, is a toroid of conductive material, usually metal, which is attached to a terminal or
Corona_ring
Cyclic oligosaccharide with 6 to 8 glucose units
glycosidic bonds. The cyclodextrins have toroidal shapes, with the larger and the smaller openings of the toroid exposing to the solvent secondary and primary
Cyclodextrin
Concept in nuclear energy
In a toroidal fusion power reactor, the magnetic fields confining the plasma are formed in a helical shape, winding around the interior of the reactor
Safety factor (plasma physics)
Safety_factor_(plasma_physics)
Protein family
then folded into a toroid, an O-shaped structure, although the mechanism is not known. A sperm cell can contain up to 50,000 toroid-shaped structures in
Protamine
Archimedean solid with 26 faces
Adventures Among the Toroids (1970) ISBN 978-0-686-11936-4 Doskey, Alex. "Adventures Among the Toroids - Chapter 5 - Simplest (R)(A)(Q)(T) Toroids of genus p=1"
Truncated_cuboctahedron
Sports equipment for ice hockey
used on floors. Open disk hockey pucks have a hole, forming the shape of a toroid, for use in a particular style of floor hockey. They should not be confused
Hockey_puck
Torus-shaped vortex in a fluid
A vortex ring, also called a toroidal vortex, is a torus-shaped vortex in a fluid; that is, a region where the fluid mostly spins around an imaginary axis
Vortex_ring
British physicist (1928–2026)
the ballooning transformation, which describes the motion of plasma in toroidal (donut) configurations, which are used in the fusion field. Taylor has
John_Bryan_Taylor
Toroidal vortex ring of air in water
A bubble ring, or toroidal bubble, is an underwater vortex ring where an air bubble occupies the core of the vortex, forming a ring shape. The ring of
Bubble_ring
Object used to guide and confine magnetic fields
cores), specialized machinery is required for automated winding of a toroidal core. Toroids have less audible noise, such as mains hum, because the magnetic
Magnetic_core
Device to couple energy between circuits
the magnetic path, toroidal transformers also tend to exhibit higher inrush current, compared to laminated E-I types. Ferrite toroidal cores are used at
Transformer
1946 proposed fusion power device
The toroidal solenoid was an early 1946 design for a fusion power device designed by George Paget Thomson and Moses Blackman of Imperial College London
Toroidal_solenoid
Plasma flow
In toroidally confined fusion plasma experiments the term zonal flow means a plasma flow within a magnetic surface primarily in the poloidal direction
Zonal_flow_(plasma)
Electrical device
operation. Transmission line transformers commonly use small ferrite cores in toroidal rings or two-hole, binocular, shapes. The Guanella transmission line transformer
Balun
Chess variant
of the chessboard are connected. In toroidal chess, the board has the form of a torus (donut shape). A toroidal board can be formed by connecting the
Cylinder_chess
Experimental physics device
The Enormous Toroidal Plasma Device (ETPD) is an experimental physics device housed at the Basic Plasma Science Facility at University of California, Los
Enormous Toroidal Plasma Device
Enormous_Toroidal_Plasma_Device
Magnetic confinement fusion reactor
confinement fusion device, the spheromak. Both are considered part of the compact toroid class of fusion devices. FRCs normally have a plasma that is more elongated
Field-reversed_configuration
2022 film by Daniel Kwan and Daniel Scheinert
will. Jobu has created a black hole-like "Everything Bagel" that forms a toroid singularity that could destroy the multiverse. Evelyn is provided verse-jumping
Everything Everywhere All at Once
Everything_Everywhere_All_at_Once
Energy storage technique
little need for toroidal geometry for small SMES, but as the size increases, mechanical forces become more important and the toroidal coil is needed.
Superconducting magnetic energy storage
Superconducting_magnetic_energy_storage
American mathematician
Adventures among the toroids. A study of orientable polyhedra with regular faces, in which he discussed what are now called Stewart toroids. The book was handwritten
Bonnie_Stewart
International scientific awards
common ground between art and science. It is molded into the shape of a toroid, recalling natural forms found from black holes and galaxies to seashells
Breakthrough_Prize
Magnetic confinement device used to produce thermonuclear fusion power
thermonuclear fusion power. Tokamaks use a combination of a central solenoid and toroidal and poloidal magnets to shape a ring of plasma. This is heated by a range
Tokamak
Natural number
with fifteen vertices is 132. In a 15 × 15 {\displaystyle 15\times 15} toroidal board in the n–Queens problem, 132 is the count of non-attacking queens
132_(number)
Topics referred to by the same term
American English) is a deep-fried piece of dough or batter, usually with a toroidal shape. Doughnut or donut may also refer to: Donut Media, an American automotive
Doughnut_(disambiguation)
Class of compact connected topological spaces
place of the circle, together with an expanding self-immersion. In the toroidal coordinates with radius R {\displaystyle R} , the solenoid can be parametrized
Solenoid_(mathematics)
Class of magnetic confinement fusion reactor
satisfies the property of omnigeneity, avoids the potentially hazardous toroidal bootstrap current, and has minimal neoclassical transport in the collisionless
Quasi-isodynamic_stellarator
American college soccer team
Symmetric Torus McArdle Laboratory Morgridge Institute for Research Pegasus Toroidal Experiment UW Hospital & Clinics Viaspan WIYN Consortium WiCell Wisconsin
Wisconsin Badgers women's soccer
Wisconsin_Badgers_women's_soccer
Species of gastropod
Margarites toroides is a species of sea snail, a marine gastropod mollusc in the family Margaritidae. Hoffman L., van Heugten B. & Lavaleye M.S.S., 2011
Margarites_toroides
Amount of twist in a particular DNA strand
plectoneme or a toroid, or a combination of both. A negatively supercoiled DNA molecule will produce either a one-start left-handed helix, the toroid, or a two-start
DNA_supercoil
Geometry book by Bonnie Stewart
Adventures Among the Toroids: A study of orientable polyhedra with regular faces is a book on toroidal polyhedra that have regular polygons as their faces
Adventures_Among_the_Toroids
Polarity-switching electronic circuit
driving the upper FETs gates. The transformer core is usually a ferrite toroid, with 1:1 or 4:9 winding ratio. However, this method can only be used with
H-bridge
Toroid protein structure formed from beta sheets
characterized by 4 to 8 highly symmetrical blade-shaped beta sheets arranged toroidally around a central axis. Together the beta-sheets form a funnel-like active
Beta-propeller
Atmospheric electrical phenomenon
plasma toroid has the appearance of ball lightning, based on observations, computer simulations, and mathematical equations. Spinning plasma toroids can
Ball_lightning
Plasma and magnetic field structure
current sheet. Plasmoids produced in the laboratory include the compact toroids (similar to a vortex ring in low temperature fluid dynamics or hydrodynamics)
Plasmoid
Device that transmits rotational power into linear thrust on a fluid
maneuvering. The absence of a shaft allows alternative rear hull designs. Twisted-toroid (ring-shaped) propellers, first invented over 120 years ago,[citation needed]
Propeller
Approach to controlled thermonuclear fusion using magnetic fields
configurations to confine fusion plasma began in the 1950s. Early simple mirror and toroidal machines showed disappointing results of low confinement. After the declassification
Magnetic_confinement_fusion
1996 FIRST Robotics Competition game
Woodie Flowers Award winner Woodie Flowers Founder's Award winner City of Manchester, NH Champions Team 73 - "Tigerbolt" ← Ramp 'n Roll Toroid Terror →
Hexagon_Havoc
Integrated audio amplifier
printed circuit board. For many years, Holden & Fisher supplied custom-made toroidal transformers used in the amplifiers. The ones used in NAIT were rated 100
Naim_NAIT
{\displaystyle (x-3)(x-1)^{9}(x+1)^{9}(x+3)(x^{2}-5)^{6}} . The Dyck graph is a toroidal graph, contained in the skeleton of a hexagonal regular map, {6,3}4,0,
Dyck_graph
Experimental fusion reactor in the United Kingdom
compact toroid class. Taylor went on to study the ballooning transformation, a problem that was occurring in the latest high-performance toroidal machines
ZETA_(fusion_reactor)
Plasma physics experiment
The Pegasus Toroidal Experiment is a plasma confinement experiment relevant to fusion power production, run by the Department of Nuclear Engineering &
Pegasus_Toroidal_Experiment
Solid with 2 parallel n-gonal bases connected by n parallelograms
centre. A crossed prism is topologically identical to an n-gonal prism. A toroidal prism is a nonconvex polyhedron like a crossed prism, but without bottom
Prism_(geometry)
Passive two-terminal electrical component that stores energy in its magnetic field
material. The shape often used is a toroidal or doughnut-shaped ferrite core. Because of their symmetry, toroidal cores allow a minimum of the magnetic
Inductor
Symmetric tessellation of a closed surface
generally regular toroidal polyhedra {p,q}b,c can be defined if either p or q are even, although only euclidean ones above can exist as toroidal polyhedra in
Regular_map_(graph_theory)
German American aerospace engineer (1912–1977)
constructed using rockets with recoverable and reusable ascent stages) was a toroid structure, with a diameter of 250 feet (76 m); this built on the concept
Wernher_von_Braun
Magnetic field plasma confinement device
device used to produce and contain near-thermonuclear plasmas. It is a toroidal pinch that uses a unique magnetic field configuration as a scheme to magnetically
Reversed_field_pinch
Canadian company created to develop fusion power
target, a plasma mass in the form of a type of plasmoid termed a compact toroid, into a cylinder of spinning liquid metal. The target is mechanically compressed
General_Fusion
valve/tube computer. These logic units consisted of a single ferrite ring (toroid), with up to fifteen connections to it. Main storage capacity was 1,024
EMIDEC_1100
Void between celestial bodies
the radiation environment variable. The radiation belts are equatorial toroidal regions, which are bent towards Earth's poles, with the South Atlantic
Outer_space
22nd episode of the 10th season of The Simpsons
architect Frank Lloyd Wright, and mentions the theory of the universe being toroidal, meaning shaped as a doughnut. At the end of the episode, during the Gracie
They_Saved_Lisa's_Brain
System of currents that do not radiate into the far field
multipoles. The terms "anapole" and toroidal moment were once used synonymously, but this is no longer common. Toroidal moment Zel’Dovich, I. B. (1958).
Anapole
single transmitter. Instead of 'beams' it used a single heavily distorted toroid that was flipped left and right with a periodicity that simulated a morse
List of Beam approach beacon system units
List_of_Beam_approach_beacon_system_units
Polyhedron with seven sides
on. One particularly interesting example is the Szilassi polyhedron, a toroidal polyhedron with 7 non-convex six sided faces. Frank Chester. "The Geometry
Heptahedron
Type of weapon that fires a concentrated beam of energy at its target
requiring brief and extremely large amounts of energy) to accelerate a toroid of plasma at a significant percentage of the speed of light. The Russian
Directed-energy_weapon
Type of plasma state achievable in tokamak research
phenomenon observed in toroidal plasmas such as tokamaks where the particle and energy confinement is significantly enhanced. Toroidal fusion plasmas generally
High-confinement_mode
Type of plasma diffusion
neoclassical diffusion is a theoretical description of collisional transport in toroidal plasmas, usually found in tokamaks or stellarators. It is a modification
Neoclassical_transport
Italian snack food
Taralli (sing.: tarallo) are toroidal Italian snack foods, common in southern Italy. Wheat-based crackers similar in texture to breadsticks, taralli can
Taralli
TOROID
TOROID
TOROID
TOROID
Boy/Male
American, Australian, British, Chinese, Christian, Danish, Dutch, English, Finnish, French, German, Hebrew, Swedish, Swiss
Supplanter; Holder of Heels; Form of James; One who Supplants; Ya-hew May Protect
Girl/Female
Indian, Sikh
Nice
Boy/Male
Muslim
Sword
Girl/Female
Indian
Sweet Basil
Boy/Male
Tamil
Elandra | à®à®²à®¾à®¨à¯à®¤à¯à®°
Boy/Male
Australian, Celtic, French, Gaelic, German, Irish
Little Champion
Girl/Female
Indian
Without the limitations of form, Divine
Girl/Female
Indian
Bestower of wealth and food grains
Surname or Lastname
English
English : variant of Priestley.
Girl/Female
Finnish, French, German, Swedish
Manly; Little and Womanly; Female Version of Charles
TOROID
TOROID
TOROID
TOROID
TOROID