U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 57051 - 57075 of 74483

The Estimation of Measurement Uncertainty of Small Circular Features Measured by CMMs

February 1, 1995
Author(s)
Steven D. Phillips, Bruce R. Borchardt, William T. Estler
This paper examines the measurement uncertainty of small circular features as a function of the sampling strategy, i.e., the number and distribution of measurement points. Specifically, we examine measuring a circular feature using a three-point sampling

A Coaxial-Resonator Driven rf(Paul)-Trap for Strong Confinement

January 1, 1995
Author(s)
Steven R. Jefferts, C Monroe, E W. Bell, David J. Wineland
We describe a variant of the quadrupole rf (Paul) ion trap capable of localization of a trapped ion to much less than an optical wavelength (Lamb-Dicke regime). The trapping potentials are generated by a high-Q, vacuum-compatible, quarter-wave resonator

A Metrology Approach to Unifying Rockwell C Hardness Scales

January 1, 1995
Author(s)
Jun-Feng Song, J Smith, Theodore V. Vorburger
Current Rockwell C hardness scales (HRC) are unified by performance comparisons. Unless a reliable metrology approach is used for the direct verification of standard hardness machines and diamond indenters, the unified hardness scale may exhibit a
Displaying 57051 - 57075 of 74483
Was this page helpful?