Reflectance of the surface of a material is its effectiveness in reflecting radiant energy. It is the fraction of incident electromagnetic power that is reflected at an interface. The reflectance spectrum or spectral reflectance curve is the plot of the reflectance as a function of wavelength.
近义、反义、联想词
近义词
n.
coefficient
英英词典
reflection factor n.
the fraction of radiant energy that is reflected from a surface
synonymous: coefficient of reflection, reflectance, reflectivity