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reflectance ratio

См. также в других словарях:

  • reflectance — [ri flek′təns] n. Physics the ratio of the amount of electromagnetic radiation, usually light, reflected from a surface to the amount originally striking the surface …   English World dictionary

  • reflectance — /ri flek teuhns/, n. Physics, Optics. the ratio of the intensity of reflected radiation to that of the radiation incident on a surface. Cf. albedo. [1925 30; REFLECT + ANCE] * * * …   Universalium

  • reflectance — noun The ratio of the flux reflected to that incident on a surface …   Wiktionary

  • reflectance — rɪ flektÉ™ns n. ratio of energy sent back from a surface to the total energy striking the surface (Physics) …   English contemporary dictionary

  • reflectance — re•flect•ance [[t]rɪˈflɛk təns[/t]] n. opt phs opt the ratio of the intensity of reflected radiation to that of the radiation incident on a surface • Etymology: 1925–30 …   From formal English to slang

  • reflectance — /rəˈflɛktəns/ (say ruh flektuhns) noun the ratio of the luminous flux reflected by a surface to the incident luminous flux. Also, reflection factor. {reflect + ance} …  

  • reflectance — The ratio of reflected luminous flux to that reflected from an ideal, perfectly reflecting surface when similarly illuminated …   Dictionary of automotive terms

  • Bidirectional reflectance distribution function — The bidirectional reflectance distribution function (BRDF; {f r(omega i , omega o) }) is a 4 dimensional function that defines how light is reflected at an opaque surface. The function takes an incoming light direction, omega i , and outgoing… …   Wikipedia

  • Spectral Reflectance —   The ratio of energy reflected from a surface in a given waveband to the energy incident in that waveband …   Energy terms

  • Normalized Difference Vegetation Index — Negative values of NDVI (values approaching 1) correspond to water. Values close to zero ( 0.1 to 0.1) generally correspond to barren areas of rock, sand, or snow. Lastly, low, positive values represent shrub and grassland (approximately 0.2 to 0 …   Wikipedia

  • Ultraviolet–visible spectroscopy — Beckman DU640 UV/Vis spectrophotometer. Ultraviolet visible spectroscopy or ultraviolet visible spectrophotometry (UV Vis or UV/Vis) refers to absorption spectroscopy or reflectance spectroscopy in the ultraviolet visible spectral region. This… …   Wikipedia

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