|
Dichromatic
Dichromatic may refer to: * Dichromacy, a form of color-blindness in which only two light wavelengths are distinguished rather than the usual three * Dichromatic, describing an optical device which splits light into two parts according to its wavelength: a form of dichroism * A form of polymorphism (biology), typical in sexual dimorphism, in which two phenotypes have different colouration or ornamentation. * Dichromatic reflectance model * Dichromatism: the property of a substance that changes hue due to change in its concentration or the thickness of a layer. See also * Chromatic * * {{Disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dichromatism
Dichromatism (or polychromatism) is a phenomenon where a material or solution's hue is dependent on both the concentration of the absorbing substance and the depth or thickness of the medium traversed. In most substances which are not dichromatic, only the brightness and saturation of the colour depend on their concentration and layer thickness. Examples of dichromatic substances are pumpkin seed oil, bromophenol blue, and resazurin. When the layer of pumpkin seed oil is less than 0.7 mm thick, the oil appears bright green, and in layer thicker than this, it appears bright red. The phenomenon is related to both the physical chemistry properties of the substance and the physiological response of the human visual system to colour. This combined physicochemical–physiological basis was first explained in 2007. In gemstones, dichromatism is sometimes referred to as the 'Usambara effect'. Physical explanation Dichromatic properties can be explained by the Beer–Lambert law a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
