optical rotation

American  

noun

Physical Chemistry.

1. the angle at which the plane of polarized light is rotated when passed through an optically active substance.

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optical rotation British  

noun

1. the angle through which plane-polarized light is rotated in its passage through a substance exhibiting optical activity

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Etymology

Origin of optical rotation

First recorded in 1890–95

Example Sentences

See Examples For:

optical rotation

Specific gravity at 15° C., 0.938-0.960; optical rotation, -35° to -45°; refractive index at 20° C., 1.5013-1.5030.

From The Handbook of Soap Manufacture by Simmons, W. H.

Specific gravity at 15° C., 0.940-0.962; optical rotation, slightly lævo-rotatory up to -4°; refractive index at 20° C., 1.485-1.490; saponification number, 100-115; soluble in 3 or 4 volumes of 70 per cent. alcohol.

From The Handbook of Soap Manufacture by Simmons, W. H.

Its specific gravity at 15° C. is 0.862; refractive index at 20° C., 1.447; optical rotation, +8° to +12°; and it should be entirely absorbed by a hot saturated solution of sodium bisulphite.

From The Handbook of Soap Manufacture by Simmons, W. H.

Its specific gravity at 15° C. is 0.9795; optical rotation, -18°; and refractive index at 20° C., 1.507.

From The Handbook of Soap Manufacture by Simmons, W. H.

Specific gravity at 15° C., 0.849-0.852; optical rotation, +95° to +99°; refractive index at 20° C., 1.4726-1.4732.

From The Handbook of Soap Manufacture by Simmons, W. H.