Surfaces can be transparent, translucent (semi-reflective), or opaque (reflective) {opacity}.
For each wavelength, a percentage {absorbance} of impinging light remains in the surface. Surface transmits or reflects the rest.
For each wavelength, a percentage {reflectance} of impinging light reflects from surface. Surface transmits or absorbs the rest. Reflectance changes at object boundaries are abrupt [Land, 1977]. Color depends on both illumination and surface reflectance [Land, 1977]. Comparing surfaces' reflective properties results in color.
For each wavelength, a percentage {transmittance} of impinging light transmits through surface. Surface reflects or absorbs the rest.
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Date Modified: 2022.0225