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Displaying 42601 - 42625 of 74202

Surface Metrology Software Variability in Two-Dimensional Measurements

January 1, 2003
Author(s)
Ndubuisi G. Orji, Theodore V. Vorburger, Xiaohong Gu, Jayaraman Raja
A range of surface texture measurement instruments is available in the market place. Most of the measurement instruments are microcomputer-based systems that contain their own surface analysis software to evaluate measured roughness profiles. After a

Sympathetic cooling of 9 Be + and 24 Mg + for quantum logic

January 1, 2003
Author(s)
Murray D. Barrett, B. L. DeMarco, T Schaetz, Dietrich Leibfried, Joseph W. Britton, J Chiaverini, Wayne M. Itano, Branislav M. Jelenkovic, John D. Jost, Christopher Langer, Till P. Rosenband, David J. Wineland
We demonstrate the cooling of a two species ion crystal consisting of one 9Be+ and one 24Mg+ ion. Since the respective cooling transitions of these two species are separated by more than 30 nm, laser manipulation of one ion has negligible effect on the

System-Level Calibration of a Transfer Radiometer Used to Validate EOS Radiance Scales

January 1, 2003
Author(s)
Bettye C. Johnson, Steven W. Brown, George P. Eppeldauer, Keith R. Lykke
A number of transfer radiometers have been developed by the National Institute of Standards and Technology (NIST) with the support and funding of the National Aeronautics and Space Administration's (NASA's) satellite sensor calibration programs. The

The Amazing Properties of Materials Science

January 1, 2003
Author(s)
D P. Vigliotti, J B. Alcorn, N A. Neumeyer, D R. Cyr, A C. Rodriguez, C N. Farrell, L A. Leininger
The purpose of this presentation is to introduce educators to a demonstration that will expose students in grades seven through twelve to a variety of mechanical tests that will allow them to observe certain unexpected properties of materials.
Displaying 42601 - 42625 of 74202
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