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.
Farlex Partner Medical Dictionary © Farlex 2012

re·flec·tance

(rĕ-flek'tăns)
A measure of reflected acoustic energy as a function of immitance, as in middle ear impedance.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.
Medical Dictionary, © 2009 Farlex and Partners

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.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
Iron oxide's spectral profile displays a strong light reflectance in the teal to red region (550-700 nm).
Trends in light reflectance and leaf extract absorbance depending on leaf elongation for three dominant species: Leaf reflectance was relatively low in the blue and red ranges, which were used for photosynthesis, while higher reflectance was observed for the green and NIR ranges, which are not used in high amounts.
The change in the light reflectance properties caused by the ghost mark defect could be characterized by means of multiangle reflectance measurements.
Light reflectance measurements of turf were taken with reflectance meters on 23 dates during the experiment corresponding to the 23 AEM sampling dates.
* Keep light reflectance' of surfaces that are visible at eye level and above as light-colored as possible, preferably at 65-75% for walls and 80-95% for ceilings.
Everitt began his salvinia research by measuring light reflectance of giant salvinia and other nearby aquatic plants.
-- Radiometric canopy light reflectance measurements were made on three aquatic plant species in Lake Texana near Edna in southeast Texas.
Light reflectance models have always been of great interest to the computer graphics community.
Tests used one optical sensor that measured light reflectance and one that measured light transmission.
At each PMS manufacturing facility, as well as the CTC, the matching process begins with what is best considered a "color workstation." Like standalone color-matching systems, each color workstation on the PMS network uses a spectrophotometer to measure the light reflectance or transmittance patterns associated with a given color.
The standard CS50 unit measures light reflectance from the target, whilst an optical version measures transmission, for use with liquids.
For best light reflectance, paint the box's inside surfaces glossy white.