radian

(Îngilîzî)

In the International System of Units, the derived unit of plane angle: the angle subtended at the centre of a circle by an arc of its circumference equal in length to the radius of the circle.

Wekî (IPA) tê bilêvkirin
/ˈɹeɪdiən/
Etîmolojî (Îngilîzî)

From radius + -an.

source of light

photosource

luminous source

optical source

radian measure

illuminating source

light source luminaire

radian

radiant

ακτίνιο

radian

Winkel im Bogenmaß

radian

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