# Resolve RDF Terms

quantitykind:ReflectanceFactor
http://qudt.org/vocab/quantitykind/ReflectanceFactor

### Recommended prefix

quantitykind:

lang:en
Reflectance Factor
lang:""
$$R = \frac{\Phi_n}{\Phi_d}$$, where $$\Phi_n$$ is the radiant flux or luminous flux reflected in the directions delimited by a given cone and $$\Phi_d$$ is the flux reflected in the same directions by an identically radiated diffuser of reflectance equal to 1.
lang:""
Reflectance Factor is the measure of the ability of a surface to reflect light or other electromagnetic radiation, equal to the ratio of the reflected flux to the incident flux.