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., 0.907-0.915; optical rotation, +77° to +79°; refractive index at 20° C., 1.485-1.486; soluble in 3 to 8 volumes of 80 per cent. alcohol.

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

Specific gravity at 15° C., 0.889-0.897; optical rotation, +15°.

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

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 W. H. Simmons

Java Citronella Oil.—Specific gravity at 15° C., 0.890-0.901; optical rotation, -1° to -6°; total acetylisable constituents, calculated as geraniol, 75-90 per cent.; soluble in 1-2 volumes of 80 per cent. alcohol.

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

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 W. H. Simmons