弳 (jìng) - Radian — a unit of angular measurement equal

弳Tone 4

jìng ｜ 10 strokes ｜ radical:

傑君

弳 · jìng

Radian — a unit of angular measurement equal to the angle at the center of a circle subtended by an arc equal in length to the radius.

Radian — a unit of angular measurement equal

Usage highlights

Radian measureRadian systemRadian angleSquare radianSteradianRadian per second

Synonyms

  • 弧度— radian measure (more common term)

Usage & contexts

Examples

  • The angle is measured in radians (弧度).
  • Convert degrees to radians (弳度).
  • The formula uses radians (弳) as the unit.
  • One full circle is 2π radians (弳).

Collocations

  • Radian measure(弳度)
  • Radian system(弳制)
  • Radian angle(弳角)
  • Square radian(弳方)
  • Steradian(立弳)
  • Radian per second(弳/秒)

Cultural background

FAQ
  • The character 弳 was created specifically for mathematical terminology to represent the radian unit.
  • It combines the bow radical (弓) with the classical character 巠 (warp threads), suggesting measurement of curvature.
  • Primarily used in technical and mathematical contexts rather than everyday language.

FAQ