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* ''R'' = ''R<sub>0</sub>'' + ''r'' cos ''θ'', and | * ''R'' = ''R<sub>0</sub>'' + ''r'' cos ''θ'', and | ||
* ''Z'' = ''r'' sin ''θ'' | * ''Z'' = ''r'' sin ''θ'' | ||
''R<sub>0</sub>'', corresponding to the torus axis, is called the ''major radius'' and ''r'' the ''minor radius''. | |||
''θ'' is called the ''poloidal angle''. | ''θ'' is called the ''poloidal angle''. | ||