Skip to main content
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.

Bidirectional reflectance scale comparison between NIST and PTB

Published

Author(s)

Catherine C. Cooksey, Maria E. Nadal, David W. Allen, Kai-Olaf Hauer, Andreas Hoepe

Abstract

A comparison of bidirectional reflectance scales between the National Institute of Standards and Technology (NIST) and the Physikalisch-Technische Bundesanstalt (PTB) has been performed. Measurements of two sets of white diffuse reflectance standards, two sintered polytetrafluoroethylene (PTFE) samples and two matte ceramic samples, were acquired using the 0:45 geometry where the angle of irradiation was 0 and the angle of reflection was 45. The results of this comparison show excellent agreement within the combined uncertainties.
Citation
Metrologia
Volume
54

Citation

Cooksey, C. , Nadal, M. , Allen, D. , Hauer, K. and Hoepe, A. (2015), Bidirectional reflectance scale comparison between NIST and PTB, Metrologia, [online], https://doi.org/10.1364/AO.54.004006 (Accessed October 26, 2021)
Created May 1, 2015, Updated November 10, 2018