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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...
When a continuous quantity is measured with a digital instrument or digitized for further processing, a measurement uncertainty component is incurred from...
The National Institute of Standards and Technology (NIST) hosted the 1998 Conference on Precision Electromagnetic Measurements (CPEM'98) in the Washington...
The National Institute of Standards and Technology hosted the 1998 Conference on Precision Electromagnetic Measurements (CPEM >98) in the Washington Renaissance...
J E. Gormley, Eric B. Steel, Q Xiao, Terrence J. Jach
Polycapillary x-ray optics are gaining increased attention as their transmission characteristics and manufacturing difficulties are better understood. This...
Yadu D. Tewari, Michele M. Schantz, David J. Vanderah
The thermodynamics of the lipase catalyzed stereospecific esterification of 1-dodecanoic acid with (-)-menthol in seven organic solvents have been investigated...
Charles J. Burroughs, Samuel Benz, Clark A. Hamilton, Todd E. Harvey
We have developed a Josephson voltage standard that produces intrinsically stable voltages that are programmable of 32 768 SNS (superconductor-normal...
A compact, transportable, Josephson voltage standard, first reported at CPEM96, has now been field tested and has had ten months of use as a primary standard by...
H. W. Fang, M C. Shen, U Cho, John A. Tesk, A Christou, Stephen M. Hsu
Ultra-high molecular weight polyethylene (UHMWPE) wear particles in replaced joints have been linked to biochemical reactions that eventually lead to loosening...
The behavior of coherent field-induced hybrids of field-free rotor states (pendular states) is studied in energy regions where intramolecular vibrational energy...
We have developed a novel, enriched potassium source for use in trapping and cooling of the fermionic isotope 40K. The source is clean, easily controllable, and...
F L. Hong, K Ishikawa, J Yoda, J Ye, L -. Ma, John L. Hall
A first international comparison of I 2-stabilized Nd: YAG lasers has been made between the National Research Laboratory of Metrology (NRLM), Tsukuba, Japan...
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...
Techniques for measuring distances, relative heights, and angles have improved significantly during the last decades. Some of these techniques can be used in...
Ronald F. Dziuba, Dean G. Jarrett, L. L. Scott, Andrew J. Secula
The National Institute of Standards and Technology (NIST) has fabricated stable, transportable 10 MΩ} and 1 GΩ} standard resistors for use in an international...
Translational flux-energy distributions of positive and negative ions have been measured at high electric field-to-gas density ratios (E/N) up to 40 x 10 -18 V...
Two Josephson Array Voltage Standard Systems using different calibration algorithms are operated at the National Institute of Standards and Technology (NIST). A...
Working standards for dissipation factor (D) standards obtained by connecting a shielded three-terminal capacitor in series with a shielded precision resistor...
Richard L. Steiner, David B. Newell, Edwin R. Williams
An improved determination of the ratio of power, measured in terms of the Josephson and quantum Hall effects, and also the meter, kilogram, and second, has been...
O. Petersons, Thomas L. Nelson, Nile M. Oldham, Gerald FitzPatrick
A special purpose ac voltage divider system with ratios of 600, 480, 360, 277, and 240 V to 120 V has been developed to extend the range of primary electric...