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Displaying records 141 to 150 of 154 records.
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141. Precision High Temperature Blackbodies
Published: 1/1/1992
Authors: V I Sapritsky, Bettye C Johnson, Robert D. Saunders, L V Vlasov, K A Sudarev, B B Khlevony, V I Shapoval, I A Dmitriev, L M Buchnev, A V Prochorov
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104153

142. Realization of New NIST Radiation Temperature Scales for the 1000 K to 3000 K Region, Using Absolute Radiometric Techniques
Published: 1/1/1992
Authors: Bettye C Johnson, Robert D. Saunders, V I Sapritsky, K D Mielenz
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=104561

143. A Portable Integrating Sphere Source for Radiometric Calibrations From the Visible to the Short-Wave Infrared
Published: Date unknown
Authors: Steven W Brown, Bettye C Johnson
Abstract: A portable integrating sphere source has been developed by the National Institute of Standards and Technology (NIST) as part of a National Aeronautics and Space Administration s (NASA s) program to validate radiance scales of sources at Earth Observi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841351

144. Absolute Flux Calibrations of Stars
Published: Date unknown
Authors: Gerald T Fraser, Steven W Brown, Howard W Yoon, Bettye C Johnson, Keith R Lykke
Abstract: Absolute stellar photometry is based on 1970s terrestrial measurements of the star Vega referenced against the Cu fixed-point blackbody. Significant advances in absolute radiometry have been made in the last 30 years that offer the potential to impro ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841110

145. Area Measurements of Apertures for Exo-Atmospheric Solar Irradiance for JPL
Published: Date unknown
Authors: Maritoni Abatayo Litorja, Bettye C Johnson, J B Fowler
Abstract: A comparison of the area measurements of the limiting apertures used for total solar irradiance measurements in the Active Cavity Radiometer Irradiance Monitor II (ACRIM II) and Active Cavity Radiometer Irradiance Monitor III (ACRIM III) were conduct ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841123

146. Comparison of Area Measurements of Apertures for Exo-Atmospheric Solar Irradiance Between NIST and JPL
Published: Date unknown
Authors: Maritoni Abatayo Litorja, Bettye C Johnson, J B Fowler
Abstract: A comparison of the area measurements of the limiting apertures used for total solar irradiance measurements in the Active Cavity Radiometer Irradiance Monitor II (ACRIM II) and Active Cavity Radiometer Irradiance Monitor III (ACRIM III) were conduct ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841122

147. Intercomparisions of Reflectance Measurements
Published: Date unknown
Authors: P Y. Barnes, Bettye C Johnson, James J. Butler, C J Bruegge, S F Biggar, P R Spyak, M M Pavlov, E A. Early
Abstract: A comparison of spectral diffuse reflectance between different national standards laboratories is being planned under the direction of the Comit* Consultatif de Photom*trie et Radiom*trie (CCPR). A similar comparison of bi-directional reflectance di ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841286

148. Metrology for Remote Sensing Radiometry
Published: Date unknown
Authors: Bettye C Johnson, Steven W Brown, Joseph Paul Rice
Abstract: Metrology, the science of measurement, is discussed in terms of measurements of radiant flux and associated quantities. Radiometric measurements are naturally remote, that is, they are non-contact. A broad application is Earth science, as global meas ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841789

149. Overview of Radiation Thermometry
Published: Date unknown
Author: Bettye C Johnson
Abstract: Researchers in the Optical Technology Division utilize measurements of radiant flux to determine temperature. This includes the dissemination of the ITS-90 above 961.78 degrees C using spectral radiance ratios (optical pyrometry) and absolute measure ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841505

150. Radiometric Validation of NASA's Ames Research Center's Sensor Calibration Laboratory
Published: Date unknown
Authors: Steven W Brown, Bettye C Johnson, S F Biggar, E F Zalewski, J W Cooper, P Hajek, E Hildum, P Grant, R Barnes, James J. Butler
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841853



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