Levorotation
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Levorotation (also spelled laevorotation)<ref name="word">The first word component levo- comes from Latin word for “on the left side”.</ref> is the counterclockwise rotation of plane polarized light.
The rotation of interest in chemistry is induced by a chiral molecule. Note that the direction of rotation cannot be predicted from the R or S designation of the configuration at a stereocenter: in some cases the R isomer is dextrorotatory and the S isomer is levorotatory, while in other cases it is the other way around. Also, the direction of rotation can change with the wavelength of the light.
[edit] Notes
<references/>fr:Lévogyre
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