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NIST Authors in Bold

Displaying 49851 - 49875 of 74070

IEEE Trans on Instrumentation - Forward

April 1, 1999
Author(s)
Norman B. Belecki
The National Institute of Standards and Technology hosted the 1998 Conference on Precision Electromagnetic Measurements (CPEM'98) in Washington, D.C. during the week of July 6-10, 1998. Attendance included 506 metrologists, physicists, and engineers from

Imaging of Acoustic Surface Wave Slowness

April 1, 1999
Author(s)
D Xiang, Nelson N. Hsu, Gerald V. Blessing
An experimental method has been devised for imaging the acoustic surface wave slowness (inverse of the phase velocity) in anisotropic solids. This technique utilizes a specially designed broadband, line-focus transducer to sense the leaky surface waves as

Improving Kinematic Touch Trigger Probe Performance

April 1, 1999
Author(s)
Steven D. Phillips, William T. Estler
Kinematic touch trigger probes are widely used on CMMs. This article gives CMM users advice on how to minimize the systematic errors associated with this class of probes.

Instrumental Aspects of X-Ray Microbeams in the Range Above 1 keV

April 1, 1999
Author(s)
P Dhez, P Chevallier, Thomas B. Lucatorto, Charles Tarrio
X rays were discovered by Roentgen in 1895, just over 100 years ago. Early investigations by Roentgen himself indicated that prisms, lenses, and mirrors were seemingly ineffective for deflecting and focusing x rays. However, the magical ability to look

Internet Commerce for Manufacturing Product Data

April 1, 1999
Author(s)
Curtis H. Parks
Printed circuit assemblies (PCA) typically are designed on computer aided design (CAD) systems, checked, then released for manufacture. The released design description typically consists of a top assembly drawing and a series of data files which are used

Modeling of Bare and Aspirated Thermocouples in Compartment Fires

April 1, 1999
Author(s)
L G. Blevins, William M. Pitts
As part of an effort to characterize the uncertainties associated with temperature measurements in fire environments, models of bare bead single-shielded aspirated, and double-shielded aspirated thermocouples were developed and used to study the effects of

Narrow-Line Doppler Cooling of Strontium to the Recoil Limit

April 1, 1999
Author(s)
K R. Vogel, Tim P. Dinneen, Alan Gallagher, J L. Hall
Experimental results on narrow line cooling line cooling of strontium atoms are presented. Doppler cooling is performed on the 1S o- 3P 1 intercombination transition at 689 nm resulting in temperatures near the recoil limit in a one-dimensional (1-D)

New Steam Properties Are Coming

April 1, 1999
Author(s)
J Bellows, J B. Sewell, Daniel G. Friend, Allan H. Harvey, Johanna Levelt Sengers, William T. Parry, Jan V. Sengers, H J. White
The IFC-67 Formulation for Industrial Use for the thermodynamic properties of water and steam (familiar to many from its implementation in the ASME Steam Tables) has served as the international steam property standard for contractual and design

NIST International and Academic Activities for FY 1997/1998

April 1, 1999
Author(s)
M F. McCurley
The Office of International and Academic Affairs (OIAA) is responsible for the coordination of all international and academic activities at the National Institute of Standards and Technology (NIST). This report details international and academic activities

NIST Research Toward Construction Site Integration and Automation

April 1, 1999
Author(s)
William C. Stone, K A. Reed, P Chang, L E. Pfeffer, Adam S. Jacoff
Current uses of computers in construction include design, planning, scheduling, and cost estimating. Much more could be achieved on a fully computer integrated construction site. This paper describes initial work at NIST toward construction site

Pendular States of Highly Vibrationally Excited Molecules

April 1, 1999
Author(s)
J Ortigoso, Gerald T. Fraser, Brooks H. Pate
The behavior of coherent field-induced hybrids of field-free rotor states (pendular states) is studied in energy regions where intramolecular vibrational energy redistribution phenomena are important, is studied. The energy region corresponding to the 4Ņ 1
Displaying 49851 - 49875 of 74070