Toroidal describes something which resembles or relates to a torus or toroid:
Mathematics
*
Torus
*
Toroid, a surface of revolution which resembles a torus
*
Toroidal polyhedron
*
Toroidal coordinates
Toroidal coordinates are a three-dimensional orthogonal coordinate system that results from rotating the two-dimensional bipolar coordinate system about the axis that separates its two foci. Thus, the two foci F_1 and F_2 in bipolar coordinates ...
, a three-dimensional orthogonal coordinate system
*
Toroidal and poloidal coordinates
The terms toroidal and poloidal refer to directions relative to a torus of reference. They describe a three-dimensional coordinate system in which the poloidal direction follows a small circular ring around the surface, while the toroidal direct ...
, directions relative to a torus of reference
*
Toroidal graph
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 can be placed on a torus such that no edges cross.
Examples
Any graph that can be embedded in a plane ...
, a graph whose vertices can be placed on a torus such that no edges cross
*Toroidal
grid network
Elex Media Komputindo is a publishing company in Indonesia which publishes books, comics, magazines, novels and other print media. Established on January 15, 1985, Elex Media Komputindo is a subsidiary of Kompas Gramedia Group. Elex is headquarte ...
, where an n-dimensional grid network is connected circularly in more than one dimension
Engineering
*
Toroidal inductors and transformers, a type of electrical device
*
Toroidal and poloidal, directions in magnetohydrodynamics
*
Toroidal engine
A swing-piston engine is a type of internal combustion engine in which the pistons move in a circular motion inside a ring-shaped "cylinder", moving closer and further from each other to provide compression and expansion. Generally two sets of pist ...
, an internal combustion engine with pistons that rotate within a toroidal space
*Toroidal CVT, a
type of continuously variable transmission
*
Toroidal reflector
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 mirrors with a surface described by a paraboloid or ellipsoid. They suffer from spherical aber ...
, a parabolic reflector which has a different focal distance depending on the angle of the mirror
Other uses
*
Toroidal ring model
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 the plasmoid ring, vortex ring, or helicon ring. This physical model treated electrons and ...
in theoretical physics
*
Vortex ring, also known as a toroidal vortex; a toroidal flow in fluid mechanics
See also
*
Atoroidal In mathematics, an atoroidal 3-manifold is one that does not contain an essential torus.
There are two major variations in this terminology: an essential torus may be defined geometrically, as an embedded, non- boundary parallel, incompressible t ...
*
Torus (disambiguation)
A torus, pl. tori, is a type of surface.
Torus may also refer to:
Music
* ''Torus'' (album), a 2013 album by Sub Focus
*''Torus'', a 2017 EP by Merzbow (Masami Akita)
Science and technology
Architecture
* A semicircular molding – see ...
{{Disambiguation