Toroidal coordinates: Difference between revisions

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* ''R<sup>2</sup> = X<sup>2</sup> + Y<sup>2</sup>'', and  
* ''R<sup>2</sup> = X<sup>2</sup> + Y<sup>2</sup>'', and  
* tan ''&phi;'' = ''Y/X''.  
* tan ''&phi;'' = ''Y/X''.  
''&phi;'' is called the ''toroidal angle'' (and not the ''cylindrical'' angle, at least not in the context of magnetic confinement).


== Simple toroidal ==
== Simple toroidal ==
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(''R<sub>0</sub>'' corresponding to the torus axis).  
(''R<sub>0</sub>'' corresponding to the torus axis).  
''R'' is called the ''major radius'' and ''r'' the ''minor radius''.
''R'' is called the ''major radius'' and ''r'' the ''minor radius''.
''&theta;'' is called the ''poloidal angle''.


== Toroidal ==
== Toroidal ==