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.
Various classes of algebraic surfaces have been examined as to their suitability for Computer Aided Geometric Design purposes. This paper co~tributes further to...
Gregory W. Caskey, Steven D. Phillips, Bruce R. Borchardt
This report examines the results of the ball plate round robin administered by NIST. The round robin was part of an effort to assess the current state of...
Matthew A. Davies, Y K. Chou, Christopher J. Evans
Topography of surfaces produced in finish hard turning using cubic boron nitride (CBN) tools is affected by a large number of factors including tool wear and...
Matthew A. Davies, Timothy J. Burns, Christopher J. Evans
The results of orthogonal cutting tests on electroplated Nickel-Phosphorus (15% phosphorus) and AISI 52100 bearing steel are presented and compared. For both...
Computer-Aided Design (CAD) software vendors are quickly recognizing the tremendous potentia1 of the Internet for connecting distributed tools and users This...
A simple, inexpensive, optically isolated current-to-voltage converter circuit has been developed for the measurement of bipolar currents in the range of 10 pA...
Svetlana A. Kotochigova, Zachary H. Levine, Eric L. Shirley, Mark D. Stiles, Charles W. Clark
The total energies of atoms and with atomic number Ζ from 1 to 92 and singly-charge cations with Ζ from 2 to 92 have been calculated to an accuracy of 1...
Angela Davies, Joseph A. Stroscio, Daniel T. Pierce, John Unguris, Robert Celotta
Using scanning tunneling microscopy, we observe the alloying of Cr with an Fe(001) substrate for various coverages at two temperatures. At low Cr coverage, the...