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Showing 1 to 12 of 1115 entries
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The Kelvin and Temperature Measurements.

Journal of research of the National Institute of Standards and Technology

Mangum BW, Furukawa GT, Kreider KG, Meyer CW, Ripple DC, Strouse GF, Tew WL, Moldover MR, Johnson BC, Yoon HW, Gibson CE, Saunders RD.
PMID: 27500019
J Res Natl Inst Stand Technol. 2001 Feb 01;106(1):105-49. doi: 10.6028/jres.106.006. Print 2001.

The International Temperature Scale of 1990 (ITS-90) is defined from 0.65 K upwards to the highest temperature measurable by spectral radiation thermometry, the radiation thermometry being based on the Planck radiation law. When it was developed, the ITS-90 represented...

Mathematics and Measurement.

Journal of research of the National Institute of Standards and Technology

Boisvert RF, Donahue MJ, Lozier DW, McMichael R, Rust BW.
PMID: 27500024
J Res Natl Inst Stand Technol. 2001 Feb 01;106(1):293-313. doi: 10.6028/jres.106.011. Print 2001.

In this paper we describe the role that mathematics plays in measurement science at NIST. We first survey the history behind NIST's current work in this area, starting with the NBS Math Tables project of the 1930s. We then...

Statistics and Measurements.

Journal of research of the National Institute of Standards and Technology

Croarkin MC.
PMID: 27500023
J Res Natl Inst Stand Technol. 2001 Feb 01;106(1):279-92. doi: 10.6028/jres.106.010. Print 2001.

For more than 50 years, the Statistical Engineering Division (SED) has been instrumental in the success of a broad spectrum of metrology projects at NBS/NIST. This paper highlights fundamental contributions of NBS/NIST statisticians to statistics and to measurement science...

A Careful Consideration of the Calibration Concept.

Journal of research of the National Institute of Standards and Technology

Phillips SD, Estler WT, Doiron T, Eberhardt KR, Levenson MS.
PMID: 27500027
J Res Natl Inst Stand Technol. 2001 Apr 01;106(2):371-9. doi: 10.6028/jres.106.014. Print 2001.

This paper presents a detailed discussion of the technical aspects of the calibration process with emphasis on the definition of the measurand, the conditions under which the calibration results are valid, and the subsequent use of the calibration results...

Comparison of Two Cryogenic Radiometers at NIST.

Journal of research of the National Institute of Standards and Technology

Houston JM, Livigni DJ.
PMID: 27500040
J Res Natl Inst Stand Technol. 2001 Aug 01;106(4):641-7. doi: 10.6028/jres.106.029. Print 2001.

Two cryogenic radiometers from NIST, one from the Optical Technology Division and the other from the Optoelectronics Division, were compared at three visible laser wavelengths. For this comparison, each radiometer calibrated two photodiode trap detectors for spectral responsivity. The...

Treasure of the Past VIII: Molecular Basis of Flame Inhibition.

Journal of research of the National Institute of Standards and Technology

Hastie JW.
PMID: 27500045
J Res Natl Inst Stand Technol. 2001 Aug 01;106(4):731-52. doi: 10.6028/jres.106.034. Print 2001.

The role played by inorganic chemical additives in fire retardancy and flame inhibition is considered. Particular attention is given to the molecular level aspects of commercially important systems containing compounds of antimony, halogens, and phosphorus. The flame inhibiting function...

Magnetic Structure Determinations at NBS/NIST.

Journal of research of the National Institute of Standards and Technology

Lynn JW, Borchers JA, Huang Q, Santoro A, Erwin RW.
PMID: 27500056
J Res Natl Inst Stand Technol. 2001 Dec 01;106(6):953-63. doi: 10.6028/jres.106.047. Print 2001.

Magnetic neutron scattering plays a central role in determining and understanding the microscopic properties of a vast variety of magnetic systems, from the fundamental nature, symmetry, and dynamics of magnetically ordered materials to elucidating the magnetic characteristics essential in...

Electron Diffraction Using Transmission Electron Microscopy.

Journal of research of the National Institute of Standards and Technology

Bendersky LA, Gayle FW.
PMID: 27500060
J Res Natl Inst Stand Technol. 2001 Dec 01;106(6):997-1012. doi: 10.6028/jres.106.051. Print 2001.

Electron diffraction via the transmission electron microscope is a powerful method for characterizing the structure of materials, including perfect crystals and defect structures. The advantages of electron diffraction over other methods, e.g., x-ray or neutron, arise from the extremely...

JCPDS-ICDD Research Associateship (Cooperative Program with NBS/NIST).

Journal of research of the National Institute of Standards and Technology

Wong-Ng W, McMurdie HF, Hubbard CR, Mighell AD.
PMID: 27500061
J Res Natl Inst Stand Technol. 2001 Dec 01;106(6):1013-28. doi: 10.6028/jres.106.052. Print 2001.

The Research Associateship program of the Joint Committee on Powder Diffraction-International Centre for Diffraction Data (JCPDS-ICDD, now known as the ICDD) at NBS/NIST was a long standing (over 35 years) successful industry-government cooperation. The main mission of the Associateship...

NIST Materials Properties Databases for Advanced Ceramics.

Journal of research of the National Institute of Standards and Technology

Munro RG.
PMID: 27500064
J Res Natl Inst Stand Technol. 2001 Dec 01;106(6):1045-50. doi: 10.6028/jres.106.055. Print 2001.

The NIST Ceramics Division maintains two databases on the physical, mechanical, thermal, and other properties of high temperature superconductors and structural ceramics. Crystallographic data are featured prominently among the physical property data and serve several important functions in the...

Transfer Calibration Validation Tests on a Heat Flux Sensor in the 51 mm High-Temperature Blackbody.

Journal of research of the National Institute of Standards and Technology

Murthy AV, Tsai BK, Saunders RD.
PMID: 27500049
J Res Natl Inst Stand Technol. 2001 Oct 01;106(5):823-31. doi: 10.6028/jres.106.039. Print 2001.

Facilities and techniques to characterize heat flux sensors are under development at the National Institute of Standards and Technology. As a part of this effort, a large aperture high-temperature blackbody was commissioned recently. The graphite tube blackbody, heated electrically,...

Studies of Excess Heat and Convection in a Water Calorimeter.

Journal of research of the National Institute of Standards and Technology

Domen JK, Domen SR.
PMID: 27500051
J Res Natl Inst Stand Technol. 2001 Oct 01;106(5):843-56. doi: 10.6028/jres.106.041. Print 2001.

To explain a difference of 0.5 % between the absorbed-dose standards of the National Institute of Standards and Technology (NIST) and the National Research Council of Canada (NRCC), Seuntjens et al. suggest the fault lies with the NIST water...

Showing 1 to 12 of 1115 entries