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 ?
Rainfall data was gathered from Department of Irrigation and Drainage (DID) whilst Malaysian Meteorological Department (MMD) under Ministry of Science, Technology and Innovation are responsible to supplyradar reflectivity data.
These fish have found a way to maximize their reflectivity over all angles they are viewed from.
Typically, construction materials present low reflectivity and emissivity values, which make them absorb a considerable amount of heat from the sun.
Improving the reflectivity of traffic signage is important to the safety of drivers.
The concept of using increased reflectivity to manipulate our climate is, in fact, an ancient one - humankind has for centuries painted settlements white to reflect the sun and keep cool.
The radar results by NASA's Mars Reconnaissance Orbiter provide a cross-sectional view of the north-polar layered deposits of Mars, showing that high-reflectivity zones, with multiple contrasting layers, alternate with more-homogenous zones of lower reflectivity.
Scientists have proposed two scenarios to explain Xena's high reflectivity.
High 89% aperture ratio and new pixel surface smoothing technology for high reflectivity performance.
The present study inquired into the varying kinds and degrees of reflectivity that ensued as first-semester secondary education preservice teachers' revisited their teaching actions and confronted peers' evaluation of their performance in a microteaching experience.
Set against the ever-changing Spanish skies, the facade possesses mirage-like qualities, as shades of colour, angles of inclination and degrees of opacity combine to mysteriously freeze the skin in liquid form, with depth, luminosity and reflectivity in constant flux.
The pores, created by using stones of similar size in the asphalt mix, are thought to dampen the hiss of the pumped air and to impair the acoustic reflectivity of the road surface.
Crustal structure, composition, seismic velocity and reflectivity define many first-order characteristics of the orogenic crust.