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Rotational transform: Difference between revisions
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Thus, ''ι/2π'' is the mean number of toroidal transits (''n'') divided by the | Thus, ''ι/2π'' is the mean number of toroidal transits (''n'') divided by the | ||
mean number of poloidal transits (''m'') of a field line on a flux surface. | mean number of poloidal transits (''m'') of a field line on a flux surface. | ||
== Safety factor == | |||
In [[Tokamak|tokamak]] research, the quantity ''q = 2π/ι'' is preferred (called the "safety factor"). | In [[Tokamak|tokamak]] research, the quantity ''q = 2π/ι'' is preferred (called the "safety factor"). | ||