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Author: howard yoon

Displaying records 111 to 120 of 121 records.
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111. Non-Contact Temperature Measurements of Micro-Scale Phenomena
Published: Date unknown
Author: Howard W Yoon
Abstract: Imaging trying to make temprature measurements in a spatial region equal to the edge of a printer paper or within the diameter of a strand of hair. The accurate computer modeling of the machining process requires measurements of the thermodynamic tem ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841508

112. Performance Comparisons of InGaAs, Extended InGaAs and Short-Wave HgCdTe Detectors Between 1 [mu]m and 2.5 [mu]m
Published: Date unknown
Authors: Howard W Yoon, Matt Dopkiss, George P Eppeldauer
Abstract: In this study, three different detectors, regular InGaAs, short-wave infrared extended-InGaAs (exInGaAs) with the bandgap wavelength at 2.6 mm and short-wave HgCdTe (swMCT) with the bandgap wavelength at 2.8 mm are studied. The detectors have active ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841047

113. Portable LED-Illuminated Radiance Source
Published: Date unknown
Authors: David W Allen, G Dezsi, Howard W Yoon
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841811

114. SSE- and Noise-Optimized InGaAs Radiation Thermometer
Published: Date unknown
Authors: Howard W Yoon, Charles E Gibson, V B Khromchenko, George P Eppeldauer
Abstract: For the measurements of radiance temperatures in the range from 150 ?C to 1000 ?C, low uncertainties in the temperature measurements can be achieved by using near-infrared InGaAs radiation thermometers. We describe the design and construction of the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841126

115. Spectroradiometric Sources
Published: Date unknown
Authors: Howard W Yoon, Charles E Gibson
Abstract: rth climate modeling and global impacts of particles and gases in the atmosphere are some of the studies that benefit from the use of spectroradiometers calibrated for spectral irradiance. Spectral irradiance is the optical power incident per unit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841555

116. Temperature Determination of the Ag-and Au-Freezing Points Using a Detector-Based Radiation Thermometer
Published: Date unknown
Authors: Howard W Yoon, David W Allen, Charles E Gibson, Maritoni Abatayo Litorja, Robert D. Saunders, Steven W Brown, George P Eppeldauer, Keith R Lykke
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841855

117. Temperature Scales Using Radiation Thermometers Calibratied From Absolute Irradiance and Radiance Responsivity
Published: Date unknown
Authors: Howard W Yoon, David W Allen, Charles E Gibson, Robert D. Saunders, Bettye C Johnson, Steven W Brown, Keith R Lykke
Abstract: In the International Temperature Scale of 1990 (ITS-90), temperatures above the freezing temperature of silver are defined with radiation thermometers calibrated using spectral radiance ratios to one of the silver-, gold- or copper-freezing temperatu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841740

118. The NIST Eutectic Project: Construction of Co-C, Pt-C, and Re-C Fixed-Point Cell and Their Comparison With the NMIJ
Published: Date unknown
Authors: Howard W Yoon, Charles E Gibson, V B Khromchenko
Abstract: The National Institute of Standards and Technology (NIST) has initiated a project on novel high-temperature fixed points by use of metal (carbide)-carbon eutectics to lower uncertainties in thermodynamic temperature measurement not only the high -tem ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841018

119. The Realization and the Dissemination of Thermodynamic Temperature Scales
Published: Date unknown
Author: Howard W Yoon
Abstract: Since the establishment of the International Temperature Scale of 1190 (ITS-90), much progress has been made in the development of radiometers and blackbody sources. Cryogenic electrical-substitution radiometry is widely used in detector and radiome ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841005

120. Thermodynamic Radiation Thermometry for the Next SI
Published: Date unknown
Authors: Howard W Yoon, Charles E Gibson, V B Khromchenko, George P Eppeldauer, Robert R. Bousquet, Steven W Brown, Keith R Lykke
Abstract: We describe the construction, the calibration and the use of the NIST Thermodynamic Radiation Thermometer (TRT) to measure the temperature of the gold-freezing temperature blackbody and a variable-temperature blackbody from 800 ?C to 2700 ?C. These ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=841125



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