optical rotation; angle of optical rotation
Technical term in chemistry and physics referring to the rotation of the plane of polarized light as it passes through an optically active substance.
We measured the optical rotation of this compound.
Optical rotation varies with temperature and solvent.
Optical activity; the property of a substance to rotate polarized light.
Compound of 旋光 (rotation of light) and 度 (degree). The exact historical derivation is uncertain; the term is a modern technical coinage.