POSC License Agreement
This file is distributed under the POSC License Agreement at
http://www.posc.org/about/license.shtml.
Use of this file constitutes agreement with the POSC License Agreement.
<xsd:documentation>The refractive index of a material depends on the frequency or
wavelength of the light. Hence it is necessary to include both the value (a unitless
number) and the frequency or wavelength. The frequency will be a quantity type with a
frequency unit, such as Hz, kHz, or MHz. The wavelength will be a quantity type with
a length unit, such as m, cm, um, in, or ft.</xsd:documentation>
<xsd:documentation>The wavelength (and uom) for which the refractive index is
measured. The reported wavelength should be the wavelength of the light in a vacuum.</xsd:documentation>