NIST NPL comparison of mid-infrared regular transmittance and reflectance

C J Chunnilall, F J J Clarke, M P Smart, L M Hanssen, S G Kaplan
2003 Metrologia  
The National Institute of Standards and Technology (NIST) and the National Physical Laboratory (NPL) realize independent scales for regular transmittance and near-normal regular reflectance in the mid-infrared part of the spectrum. Comparisons of these scales have recently been completed and the results are reported here. The agreement was excellent, lying within the quadrature combined uncertainties for the great majority of values measured and within the simple sum of uncertainties in all
more » ... tainties in all cases, demonstrating the level of equivalence of the NIST and NPL scales.
doi:10.1088/0026-1394/40/1/313 fatcat:zlebdgzr7bhr3o3e7mtklmx5vi