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 ?
P([lambda]) is the value of the spectral power distribution of the illuminant, R([lambda]) is the reflectance factor of the sample, and the [bar.
This way linear relations between the digital numbers (DN) of the original image and ground level reflectance factors (R) were established by the relation
The average reflectance factors of each queried forest type [R.
The front surface reflectance factor r(0) of the perfectly smooth ABS, evaluated from Eq.
Spectral indices with reflectance factors, such as NDVI and waveband ratios based on simple combinations of visible and near-infrared reflectances, have been widely used in the past decades to monitor and estimate vegetation (Daughtry et al.
Table 3 illustrates the mean reflectance factors of all of the crop residues and soil measured in a red (TM3, 630-690 nm) band and a near infrared (TM4, 760-900 nm) band carried by the thematic mapper (TM) sensor on the current Landsat satellite.