An official website of the United States government
Here’s how you know
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.
Recent experimental measurements of soot volume fraction in a flickering CH4/air diffusion flame show that for conditions in which the tip of the flame is...
An experimental study of round buoyant turbulent plumes is described, emphasizing conditions where the flow has lost source momentum and other source...
Shape algebraic representations provide several advantages over more traditional geometric representations. The use of predicate logic formulations of shape and...
David J. Wineland, C Monroe, D M. Meekhof, B E. King, Dietrich G. Leibfried, Wayne M. Itano, James C. Bergquist, D J. Berkeland, John J. Bollinger, J D. Miller
A single trapped 9Be+ ion is used to investigate Jaynes-Cummings dynamics for a two-level atomic system coupled to harmonic atomic motion. We create and...
Lowell P. Howard, Fredric Scire, Jack A. Stone Jr.
A description of a Fabry-Perot interferometer for measuring small displacements is given. The instruments consists of a fiber-optic-coupled actuator and mirror...
The recent halt in the production of CF3Br because of its deleterious effect on stratospheric ozone levels has intensified the search for new suppressants with...
A time-varying, axi-symmetric, methane/air, nonpremixed flame is created by imposing a sinusoidal modulation to the fuel flow rate, which creates flames that...
Jun-Feng Song, Samuel R. Low III, David J. Pitchure, Theodore V. Vorburger
Since the 1980's, the European Community (EC) has established a unified Rockwell C hardness (HRC) scale by averaging several national scales, which come from...
This paper describes a new project that is part of a program initiated by the Manufacturing Engineering Laboratory of the National Institute of Standards and...
An uncertainty procedure is used for reporting the NIST surface finish and microform calibration uncertainties. The combined standard uncertainty is a...
Richard M. Silver, Amy Singer, L Carroll, S Berg-cross, James E. Potzick
Many of the significant challenges in making accurate overlay registration measurements are discussed. An understanding of the causes of the errors affecting...
David J. Wineland, James C. Bergquist, D J. Berkeland, John J. Bollinger, F C. Cruz, Wayne M. Itano, Branislav M. Jelenkovic, B E. King, D M. Meekhof, J D. Miller, C Monroe, Joseph N. Tan