Also found in: Dictionary, Thesaurus, Acronyms, Encyclopedia, Wikipedia.
A measure of reflected acoustic energy as a function of impedance, as in the middle ear.
Farlex Partner Medical Dictionary © Farlex 2012
A measure of reflected acoustic energy as a function of immitance, as in middle ear impedance.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
The fraction of total light reflected after it hits a surface, and the angle at which it is reflected. It is the inverse of absorbance.
The reflectance of light from a rough or nonpolished surface in which the radiant energy tends to scatter. The angle of reflectance does not equal the angle of incidence.
The reflectance of light from a polished surface in which the angle of reflectance equals the angle of incidence.
Medical Dictionary, © 2009 Farlex and Partners
A measure of reflection equal to the ratio of reflected luminous flux Ε′ to the incident luminous flux Ε, i.e. ρ = Ε′/Ε. Syn. reflection factor. See Fresnel's formula.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann