Pigments reflecting

Thus, we have two units of measurement of intensity. One is related to scattering from a surface, L, i.e.- in foot-lamberts and the other is related to emittance, H, i.e.- in lumens per square foot. Although we have assumed "white" light up to now, either of these two can be wavelength dependent. If either is wavelength dependent, then we have a pigment (reflective- but more properly called scattering) with intensity in foot-lamberts, or an emitter such as a lamp or phosphor (emittance) with intensity in lumens. 

Although we have assumed "white" light up to now, either of these two can be wavelength dependent. If either is wavelength dependent, then we have a pigment (reflective- but more properly scattering) with intensity in foot-lamberts, or a phosphor (emittance) with intensity in lumens. 

Pearlescent and interference pigments reflect light in a specular manner similar to a mirror. The angle at which most of the light is reflected is equal to the angle of the incident light. The... 

How can this discrepancy between spherical non-metallic and the metallic flakes be explained Metallic pigments reflect most of the light, scatter some but absorb very little, while... 

Metallic pigments reflect infrared radiation and hence are able to reduce the heat emission from a surface coated therewith, according to Kirchhoff s law 1-/J(A.) = e(X,), where R = reflectance and e = emissivity. Hybrid polymers are superior to commercially available binders, considering both miscibility with IR-reflective pigments and the achievable degree of filling. However, in order not to affect the optical function of the pigments, the infrared absorption of the binder should also be as... 

A pearl effect can also be obtained by using appropriate pigments. They are the so-called pearlescents. Pearlescent pigments reflect and transmit light by their transparency. The pearlescent effect of a pigment is obtained by superpositioning plates of transparent material and different refractive indexes. This stmcture allows the reflection of part of the incident light and transmits the remainder to the plates below. 

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