Definitions for specific rotation
spe·cif·ic rota·tion

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1. specific rotationnoun

   [u03B1], the angle of rotation of the plane of polarization of a ray of monochromatic light that passes through 10cm of the substance in solution at a concentration of 1 gram per millilitre

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1. Specific rotation

   In chemistry, specific rotation ([α]) is a property of a chiral chemical compound.: 244  It is defined as the change in orientation of monochromatic plane-polarized light, per unit distance–concentration product, as the light passes through a sample of a compound in solution.: 2–65  Compounds which rotate the plane of polarization of a beam of plane polarized light clockwise are said to be dextrorotary, and correspond with positive specific rotation values, while compounds which rotate the plane of polarization of plane polarized light counterclockwise are said to be levorotary, and correspond with negative values.: 245  If a compound is able to rotate the plane of polarization of plane-polarized light, it is said to be “optically active”. Specific rotation is an intensive property, distinguishing it from the more general phenomenon of optical rotation. As such, the observed rotation (α) of a sample of a compound can be used to quantify the enantiomeric excess of that compound, provided that the specific rotation ([α]) for the enantiopure compound is known. The variance of specific rotation with wavelength—a phenomenon known as optical rotatory dispersion—can be used to find the absolute configuration of a molecule.: 124  The concentration of bulk sugar solutions is sometimes determined by comparison of the observed optical rotation with the known specific rotation.

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1. Specific rotation

   In stereochemistry, the specific rotation of a chemical compound [α] is defined as the observed angle of optical rotation α when plane-polarized light is passed through a sample with a path length of 1 decimeter and a sample concentration of 1 gram per 1 millilitre. It is the main property used to quantify the chirality of a molecular species or a mineral. The specific rotation of a pure material is an intrinsic property of that material at a given wavelength and temperature. Values should always be accompanied by the temperature at which the measurement was performed and the solvent in which the material was dissolved. Often the temperature is not specified; in these cases it is assumed to be room temperature. The formal unit for specific rotation values is deg dm−1cm³ g−1 but scientific literature uses just degrees. A negative value means levorotatory rotation and a positive value means dextrorotatory rotation. Dextrorotatory means that the plane of polarization is turned clockwise when the light comes through the sample to the observer.

How to pronounce specific rotation?

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Numerology

1. Chaldean Numerology

   The numerical value of specific rotation in Chaldean Numerology is: 9

2. Pythagorean Numerology

   The numerical value of specific rotation in Pythagorean Numerology is: 2

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Specific_Rotation
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Specific_Rotation
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=specific rotation