U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications by: Maria E. Nadal (Fed)

Search Title, Abstract, Conference, Citation, Keyword or Author
Displaying 51 - 75 of 150

NIST Reference Colorimeter

May 9, 2005
Author(s)
Maria E. Nadal, Robert R. Bousquet, Gael Obein
The Optical Technology Division at the National Institute of Standards and Technology (NIST) developed a reference instrument for measuring the surface color of non-fluorescent samples at the standard measuring geometries of 0 /45 , ~0 /d, and 8 /d with

Uncertainty Analysis for Reflectance Colorimetry

June 1, 2004
Author(s)
E A. Early, Maria E. Nadal
The uncertainty associated with the quantitative description of the color of an object is often necessary for determining the acceptability of that object for its intended application. Uncertainties are also required for establishing the traceability of a

Color Measurements for Pearlescent Coatings

February 1, 2004
Author(s)
Maria E. Nadal, E A. Early
This paper describes recent developments at the National Institution of Standards and Technology in the colorimetric characterization of pearlescent coatings. The goal of this research is to develop a measurement protocol for the accurate color

Uncertainty Analysis of Reflectance Colorimetry

June 1, 2003
Author(s)
E A. Early, Maria E. Nadal
The specification of the color of an object is important, sometimes crucially, to its acceptability for an intended application. When quantitative measurements are used to determine the color of an object, an uncertainty is required to satisfy the

Optical Reflectance of Metallic Coatings: Effect of Aluminum Flake Orientation

September 1, 2002
Author(s)
Li Piin Sung, Maria E. Nadal, M E. McKnight, Egon Marx, B Laurenti
The orientation of platelet-like pigments in coatings is affected by the processing conditions resulting in appearance variations of the final product. A set of aluminum-flake pigmented coatings having different flake orientations was pre-pared using