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Displaying 46751 - 46775 of 73697

Ultrastable Laser Array at 633 nm for Real-Time Dimensional Metrology

January 1, 2001
Author(s)
Y Lecoq, J Pedulla, John Lawall
We describe a laser system for very high-accuracy dimensional metrology. A sealed-cavity helium-neon laser is offset-locked to an iodine-stabilized laser in order to realize a secondary standard with higher power and less phase noise. Synchronous averaging

Uncertainties in Interferometric Measurements of Radius of Curvature

January 1, 2001
Author(s)
Tony L. Schmitz, Angela Davies, Christopher J. Evans
The radius of curvature of spherical surfaces may be determined using the well-known radius, or optical, bench. In this method, a figure measuring interferometer is employed to identify the null positions at the best fit spherical surface (cat''s eye) and

Users' Guide for Hand-Held and Walk-Through Metal Detectors

January 1, 2001
Author(s)
A G. Lieberman, Kathleen M. Higgins, Nicholas Paulter
The guide provides the law enforcement and corrections (LEC) community with information concerning the theory and limits of operation of hand-held and walk-through metal weapon detectors. This guide is also intended to supplement National Institute of

Using Intelligent Agents to Assess Pervasive Computing Technologies

January 1, 2001
Author(s)
L P. Ciarletta, Alden A. Dima, V P. Iordanov
Pervasive Computing (a.k.a. Ubiquitous or Ambient Computing) is a new field of computer science generally considered to lie at the intersection of desktop computing, networking, and embedded systems. Related to pervasive computing are Intelligent
Displaying 46751 - 46775 of 73697
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