In nuclear physics a torus is a large fusion reactor which is shaped like an elliptical or circular torus. Examples are JET in the UK, JT-60 in Japan, TFTR in the USA and the proposed ITER. Nuclear physics is the branch of physics concerned with the nucleus of the atom. ... // Geometry In geometry, a torus (pl. ... Split image of JET with right side showing hot plasma during a shot. ... JT-60 (JT stands for Japan Torus) is the flagship of Japans magnetic fusion program, run by the Japan Atomic Energy Research Institute (JAERI), Naka Fusion Research Establishment, in Ibaraki Prefecture, Japan. ... The Tokomac Fusion Test Reactor (TFTR) was an experimental fusion test reactor built at Princeton Plasma Physics Laboratory (in Princeton, New Jersey) circa 1980. ... Cutaway of the ITER Tokamak Torus incasing. ...
The name of 'torus' is a generic term used to describe these new types of fusion reactors. They are tokamak-based reactors, where intense magnetic fields are generated to confine elements in a plasma state. The torus is usually compared to a doughnut, since its main confinement chamber is shaped like a doughnut. The reason for this is that a torus is the optimal shape to generate a magnetic field around with minimal irregularities in the field. A split image of the largest tokamak in the world, the JET, showing hot plasma in the right image during a shot. ... The word plasma has a Greek root which means to be formed or molded (the word plastic shares this root). ...
In geometry, a torus (pl. tori) is a surface of revolution generated by revolving a circle in three dimensional space about an axis coplanar with the circle, which does not touch the circle.
Intuitively speaking, this means that a closed path that circles the torus' "hole" (say, a circle that traces out a particular latitude) and then circles the torus' "body" (say, a circle that traces out a particular longitude) can be deformed to a path that circles the body and then the hole.
An ordinary torus is a 1-torus, a 2-torus is called a double torus, a 3-torus a triple torus, and so on.
In geometry, a torus (pl. tori) is a doughnut-shaped surface of revolution generated by revolving a circle in three dimensional space about an axis coplanar with the circle, which does not touch the circle.
Torus was the Latin word for a cushion of this shape.
The first homology group of the torus is isomorphic to the fundamental group (since the fundamental group is abelian).
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