旋せん光こう角かく

noun

optical rotation angle

Technical term in chemistry; the angle by which plane-polarized light is rotated when passing through an optically active substance. Often used in the context of polarimetry.

See also: 旋光度

• 旋せん光こう角かくを測そく定ていすることで、試し料りょうの光こう学がく純じゅん度どがわかる。

  By measuring the optical rotation angle, the optical purity of the sample can be determined.