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Displaying 43526 - 43550 of 53812

Photogrammetric Reconstruction of Petroglyphs

January 1, 1997
Author(s)
Russell A. Kirsch
Viewing rock art is a complex experience, just as is viewing any ohter art form. This experience may include knowledge of the site location, its time of creation, co-occurence with other rock art, stylistic correspondences (Kirsch 1996), and many other

Physical Modeling of Intumescent Fire Retardant Polymers

January 1, 1997
Author(s)
Kathryn M. Butler
Intumescent chemical systems are designed to swell into a thick, robust foam upon exposure to heat, protecting the underlying material from fire by providing a physical barrier to heat and mass transfer. The mechanisms determining the fire-resistant

Pitch and Step Height Measurements Using NIST

January 1, 1997
Author(s)
R Koning, Ronald G. Dixson, Joseph Fu, V W. Tsai, Theodore V. Vorburger, Edwin R. Williams, X Wang
The use of the atomic force microscope (AFM) for step height and pitch measurements in industrial applications is rapidly increasing. To compare the results obtained by different instruments and to achieve high accuracy, the scales of an AFM must be

Proceedings of the First Process Specification Language (PSL) Roundtable

January 1, 1997
Author(s)
Craig I. Schlenoff, Amy Knutilla, Steven R. Ray
On April, 1997, the Process Specification Language (PSL) Project held a Roundtable discussion at the National Institute of Standards and Technology (NIST). The goal of the Roundtable was to assemble key champions and stakeholders of various

Production of Two Overlapping Bose-Einstein Condensates by Sympathetic Cooling

January 1, 1997
Author(s)
C J. Myatt, E A. Burt, R W. Ghrist, Eric A. Cornell, C E. Wieman
A double magneto-optic trap apparatus with a number of desirable features was used to create condensates of 2x106 atoms in either of the F=2, m=2 or F=1, m=-1 spin states of 87Rb. Overlapping condenstates of the two states were also created using nearly

Quantum Harmonic Oscillator State Synthesis and Analysis

January 1, 1997
Author(s)
Wayne M. Itano, C R. Monroe, D M. Meekhof, Dietrich G. Leibfried, B E. King, David J. Wineland
We laser-cool single beryllium ions in a Paul trap to the ground (n = 0) quantum harmonic oscillator state with greater than 90% probability. From this starting point, we can put the atom into various quantum states of motion by application of optical and
Displaying 43526 - 43550 of 53812