Solutions for Optical Spectroscopy Materials, Coatings, and Standards
Solutions for Optical Spectroscopy Materials, Coatings, and Standards
Download this white paper in PDF format In the United States1, the ultimate authority on measurement practice lies within the Department of Commerce, at the National Institute of Standards and Technology (NIST) [1]. So to start any discussion about…
Previously, we reviewed the first of the basic units we measure: reflectance. We presented a simplified but rigorous definition of the way we quantify the flux reflected from a surface. In a similar way, this post addresses transmittance, which describes the…
Color Standards – What Are They? There are a bewildering amount of color standards available, each with a set of properties that will make it very good for some applications, and possibly very bad for others. This note will…
The material properties we measure are reflectance and transmittance, or more typically, reflectance factor and transmittance factor. Transmittance and reflectance are the more general measurements, but as we will see below, when we compare a sample and a physical reference…