toroid
Sign in to savethumb|A toroid using a square. thumb|A torus is a type of toroid.
~2 min read
Encyclopedic overview
6 sectionsContents
- Equations
- Square toroid
- Circular toroid
- See also
- Notes
- External links
thumb|A toroid using a square. thumb|A torus is a type of toroid.
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 the surface. For example, when a rectangle is rotated around an axis parallel to one of its edges, then a hollow rectangle-section ring is produced. If the revolved figure is a circle, then the object is called a torus.
Excerpted from Wikipedia’s “toroid” article, available under the CC BY-SA 4.0 licence.