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reflectance

reflectance

1 7.9
The amount of light a surface sends back
  • noun
  • /rɪˈflɛktəns/
  • Specialized
translation icon : reflectancia
  • Meter your subject directly and adjust for its reflectance vs. 18% gray (or average).
  • reflectance and transmittance
  • reflectance measurements
  • surface reflectance

So light fields and reflectance fields are kind of duals of each other.

Examples

  • Thus, for example, the digitized image signal at 50% reflectance or transmittance would be half the peak value.

    Academic text (1992)
  • Everitt found that if the salvinia plants were healthy, their green light reflectance could be easily distinguished from that of other plants.

    Academic text (2001)
  • What would increase the reflectance off of that window?

  • Binary printers produce only two levels of reflectance at any pixel:

    Academic text (1992)
  • In a printed image, reflectance patches having linear reflectance differences are not perceived by the human eye as uniform.

    Academic text (1992)
  • After 120 x 10^6 pulses, the reflectance of both samples dropped by more than 30%.

    Academic text (2001)
  • Soil scientist Jim Schepers measures canopy reflectance from several plants using real-time sensors being developed for mobile applications.

    Academic text (2000)
  • Everitt began his salvinia research by measuring the light reflectance of giant salvinia and other nearby aquatic plants.

    Academic text (2001)
  • There is as yet no physically based algorithm to robustly relate forest-level reflectance changes at 531 nm to down-regulation.

    Academic text (2010)
  • The new solar panels have a high reflectance, allowing them to capture more sunlight.

Synonyms

albedo
vsreflectance
  • Specialized
7 9.9

The amount of sunlight a surface reflects, like a planet or moon

is the general surface proportion term not limited to planets or moons
reflectivity
vsreflectance
  • Specialized
1 6.1

How much light or heat a surface sends back

is the measured proportion term rather than the general ability
reflection factor
vsreflectance
  • Specialized
7.4

Part of light that bounces off a surface, like a mirror

is the broader general term for that same measured proportion
coefficient of reflection
vsreflectance
  • Specialized
8.2

Part of incoming light or heat that bounces off a surface

is the wider name for the same proportional measurement
reflective power
vsreflectance
  • Specialized
6.0

How much light a surface sends back when light hits it

is the proportional measure term rather than the ability description

Surface Forms

reflectance singular
reflectances plural

Morphology

reflectance = reflect (transparent) = reflect + ance

The noun is formed by adding the productive nominalizing suffix '-ance' to the verb 'reflect', yielding the measurable property of being reflected.

Etymology

The word reflectance comes from the parts re- 'back' and flect 'to bend', the same root as flex, so think of light being 'bent back' by a surface. Reflectance is the amount of light a surface sends back, usually shown as a percentage.