reflectance

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re·flec·tance

(rē-flek'tăns),
A measure of reflected acoustic energy as a function of impedance, as in the middle ear.

re·flec·tance

(rĕ-flek'tăns)
A measure of reflected acoustic energy as a function of immitance, as in middle ear impedance.

reflectance

(rē-flek′tăns)
The fraction of total light reflected after it hits a surface, and the angle at which it is reflected. It is the inverse of absorbance.

diffuse reflectance

The reflectance of light from a rough or nonpolished surface in which the radiant energy tends to scatter. The angle of reflectance does not equal the angle of incidence.

spectral reflectance

The reflectance of light from a polished surface in which the angle of reflectance equals the angle of incidence.

reflectance 

A measure of reflection equal to the ratio of reflected luminous flux Ε′ to the incident luminous flux Ε, i.e. ρ = Ε′/Ε. Syn. reflection factor. See Fresnel's formula.
References in periodicals archive ?
Under the right conditions, this process can form a microstructure network in the ideal size range to create an unpigmented film of high diffused reflectance.
2) To determine the relationship between the fire ant nest soil reflectance and soil moisture content, the following steps were performed.
As the reflectance r is increased, more and more of the total illuminance ET is due to light interreflected from the room surfaces.
Special sample holders that enable transmittance and reflectance measurements at off-normal incidence were fabricated from aluminium tubes with one end machined at a known angle, [theta].
The results have shown higher reflectance values of non aged original filter paper in relation with aged original filter paper.
The reflectance measurements results obtained with a FTIR equipped with an integrating sphere are analyzed and implemented in a thermal model.
The medium and coarse resolution satellite systems, such as MODIS (Moderate Resolution Imaging Spectroradiometer), produce almost continuous data over the whole Earth and thus the information on reflectance seasonal changes at a coarse scale and in large territories is relatively well represented.
This function is known as the bi-directional reflectance distribution function (BRDF).
5 and 6 With Experimental Reflectances and Transmittances of the Free Standing Alkyd Resin Film at the Two Wavelengths.
Although the retrievals of aerosol and surface reflectance are interdependent, and provide a mutual quality control through iteration, successful aerosol retrieval depends on high-quality surface reflectance data, and the surface reflectance can only be retrieved for known aerosol-optical properties.