reflectance

[/rɪˈflɛktəns/]
nounfemininepl: reflectances
refletância
1. The fraction of incident electromagnetic radiation that is reflected by a surface or material
The reflectance of the mirror is nearly 100%, making it highly efficient at bouncing light.
A refletância do espelho é quase 100%, tornando-o altamente eficiente ao refletir luz.
2. In physics and optics, the ability of a material to reflect light or other radiation
Engineers measured the reflectance of the coating to ensure optimal performance.
Os engenheiros mediram a refletância do revestimento para garantir desempenho ideal.
3. The ratio of reflected to incident radiation, expressed as a percentage or decimal
The solar panel's reflectance loss reduces energy absorption efficiency.
A perda de refletância do painel solar reduz a eficiência de absorção de energia.
Reflectance is primarily a technical term used in scientific, engineering, and optical industries. It is more commonly employed in North American scientific literature and research. In Brazilian Portuguese academic contexts, the term 'refletância' is well-established in physics and materials science disciplines, though 'refletividade' may also be used.
Synonyms / Sinônimos
reflection coefficientreflectivityreflection factor
Antonyms / Antônimos
absorbancetransmittanceemittance

Regional Variations

General Brazilian Portuguese
refletância
Standard technical term used in physics and engineering
Portugal
refletância
Same as Brazilian Portuguese; technical scientific terminology is consistent
USA English
reflectance
Preferred term in American scientific and technical literature
UK English
reflectance
Less commonly used than 'reflectivity' in British English contexts

Related Words

reflectreflectionreflectiveoptical propertiesalbedotransmittanceabsorptance

Related Idioms & Phrases

high reflectance surface
low reflectance material
spectral reflectance
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