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Turn (geometry) |
A turn is a unit of plane angle, equal to 360° or 2π radians. As an angular unit it is mainly useful for large angles, such as in connection with coils and rotating objects. See also winding number.
A turn is also named as 'revolution' or 'complete rotation' or 'cycle'.
The British astronomer and science writer Sir Fred Hoyle (1915 - 2001) in Astronomy (London 1962), proposed dividing the circle, or turn into 1000 milliturns, with each milliturn corresponding to an angle of 21' 36", or less than a quarter of a degree.
Turn is used in complex dynamics for measure of external and internal angles
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